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It's almost like we're not meant to be sat down a minimum of 8hrs a day during the day!

It's all the garbage in the food and water... pesticides, micro plastics, harmful chemicals. It's scary.

The worst form of punishment for kids: Before 2000: “You will not go play with friends outside!” After 2000: “I will take your phone and you go out to play!” That says a lot…

Try to get your kids to play team sports. Besides the regular physical activity of the sport itself, they are often required to lift weights as a team during the off-season. Both of my teenage sons are stronger than I was at their age. We're not slaves to this trend of having weak kids. And a bonus is it seems to keep them out of trouble, having coaches and a team to hold them accountable.

Ive been working blue collar jobs, i got moved to a office position because they really needed someone there and im the only one that qualified in the company at the time. And tbh I miss doing the grunt work. I was much happier when i was moving all day. Now i just sit on my ass and i frequently take "breaks" just to walk around for a minute. I hate it

I track risks at the national level and I am so concerned about obesity, depression, suicide, educational performance, religiosity, friendships, the decline in the social status of men and boys, and life expectancy. None of these have very healthy indicators. However, politicians, policymakers, and bureaucrats don’t care.

Lifting phones doesn't build muscle 🙉

All the kids that come to our ADHD clinic live a sedentry lifestyle consisting of tv, ipads, and gaming. Parents don't try getting them into any sort of sport or outdoor activities, instead they come to the clinic and demand a diagnosis and dexamphetamines. I wonder if we would see less kids being diagnosed if they had more physically active lifestyles.

I know it’s just a thumbnail, but Arnie is a boomer not gen X. Great interview by the way.

I'm 50 now but we were so active as kids. Because sitting around doing nothing at home was so boring as there was basically nothing to do. So we used to bike everywhere and didn't expect or even want our parents to drive us around. I'd bike 10km over steep hills to school and back everyday(volcanic area) from age 11 and never got the bus no matter how wet it was. And school bike sheds were absolutely huge and always full to the brim. We'd bike down to the pool, to the beach with a surfboard under the arm and go for a 3hr surf and bike home again. We'd bike across town to the tennis courts and play tennis etc etc. We'd spend all day skateboarding in and across town- probably a good 10 to 20kms. I have a photo with a couple of friends at age 13 or so before puberty and we were well muscled and ripped and had 6packs(well my friend did especially due to Greek ancestry and good ab insertions- my ab insertions suck). We had a couple of chubby kids and 1 fat kid in every class but the rest were skinny. Its not like we are genetically superior to kids today- but just because we were so active due to not staring at screens all day. And no parents having to drive us everywhere terrified about "safety" and "stranger danger"(that came a bit later) so we nearly all became extremely fit compared to a good proportion of kids today.

My father passed away 13 years ago. The commentary in this video about the necessity of chewing hard food reminds of the excellent advice he gave me when I was a kid. Whenever I used to eat chicken on the bone, or a pork rib or beef rib, he would aways tell me to gnaw on the bone and crunch on the cartilage. I am 47 years of age, and unlike most of my peers, I have never had a cavity nor have I had to have my wisdom teeth pulled. Thank you, dad, for on top of being a mentor, moral exemplar and provider, for offering such sage advice which is now being confirmed by science.

I was a trash collector to pay the rent to get me through film school. I always felt happier at the end of each day doing that than being a student. Because I didn’t like students.

I don't know if every highschool has senior pictures on their walls but where I live they do, and when you look at the young men from the 1950s and compare to the children of today you'll notice a significant difference.

I played outside, had chores, rode my bike to work, farmed, and am so fortunate my parents encouraged all that activity.

A good majority of what corporate/establishment science and media tells you is "healthy and good for you" is the inverse of the truth. This can be a very difficult mindset to undo, especially if you live in the US, as the population has been marketed to/manipulated for decades in the name of profit.

Currently 28, been lifting weights regularly for strength and bodybuilding purposes since 20. So thankful and hopefully I've built up enough bone 🙏🏽

Awesome interview, thanks very much. Your guest spoke so well and with such balance. Your questions were great too. Thank you, Gus

I work as a driving instructor and no lie, I would say that 90% of my 17 year old students do not have the strength to release the handbrake/parking brake. It’s crazy to watch. It takes them a couple of lessons to build up ‘the strength’ to release it

I lift, I’m stronger now than I was in my 20s, I’m 47 this year. I can bench press 2 x 50kg dumbbells for 8 reps (on a good day).

When I was A child we were not allowed to play inside the house it was common for mum to say go play outside and dont come back until lunchtime or dinner time, also we had to walk to school

Our local high school doesn’t even have a football team anymore

Well... as a millennial, sadly it's because of our generation. There's a huge divide. There's those of us who are "old school" and believe in discipline and old fashioned values. Doing things the hard way in order to get a desired outcome, and then there're others who are weak minded and act mainly on emotion. Technology has enabled everyone to get the high of doing difficult tasks without actually doing it. Now days we get a dopamine kick off being a "navy seal" by playing call of duty. Or being a NFL star by playing madden. Or swiping online because of a virtual match instead of actually meeting people face to face and courting over time. It's a "me me me now now now" generation, and we've allowed it to get this way. We want all the benefits of life without the consequences and responsibilities that come with what it takes to lose or acheive them. Parents don't parent anymore. And as a result, the family unit is broke and kids end up getting raised by society, thus causing them to be exposed to way too much, forcing them to grow up way too fast taking on adult thoughts and feelings without having the emotional capacity to process and withstand the pressure that comes with it. Kids don't act like kids anymore. They act way too grown and as a result, they don't know how to navigate through life and they don't respect their parents because most the time, the parents don't know how to relate. So they turn to technology and peers. (Same goes for us millennials) and the cycle of dopamine continues. Because like I've said countless times to adult acquaintances who still act like kids, "if your losing in actual reality, then virtual will do."

a contributing factor i think people often overlook is how hostile the outside world is to children the only place they can play or explore is a playground or a park, and that is only accessible via driving in a car. Kids today do not have neighborhoods to explore, vistas to hang out and socialize in, or even affordable "social entertainment" for their age groups. all of this I feel has resulted in kids that are, on average, weaker physically due to not working out regularly (thus turning to gym culture, which is an adult oriented space), and sadly as well, not developing their spatial awareness skills there are MILLIONS of kids that don't even know how to get to their house from school, or vice versa, because they never explore, they never travel on their own. Someone else ALWAYS shuttles them. Be it their parents, or public transportation.

Less exercise, foods, hormone injections in meat. It’s all nasty.

My family were kind of...anatomical freaks. My dad's lungs were ginormous, apparently. The doctor couldn't get over how big they were lmao he had asbestos in his lungs, which was what the appointment was about (he was born in 1941, dad was almost 60 when I was born, so..context). My brother had an xray due to a fall he had that *should* have theoretically broken his leg. But the doctor laughed and said he was fine, he had bones like a tree trunk. I'm the shortest in my family, I'm 5'9"..my brothers are 6'3" and 6'4". My eldest brother's sons are over that. My biological great grandfather was seven feet tall lol, he was a bit of a myth among family members on both sides, my dad was one of the last people to meet him. To this day, people see me and stare because I look like the bloody jolly green giant. Technically, I'm a young millennial...but my genes are *technically* gen X (again, I'm 30, but if my dad was alive, he'd be 83. My brothers are 40 and 51). The kids my age were so much smaller than me, shorter, and I've always been super athletic. My dad was a bodybuilder, he was a college football quarterback...but never attended college. He was brought in to play by the coach just because of how impressive he was. Dad played hockey, he was unbeatable in track, and survived unbelievable accidents. At 72, he fell off a 12 foot balcony onto concrete. Most people would have been really injured or even died..his knee was red, no bruises, no breaks, nothing. The man smoked a pack a day, never had cancer. He died at 76 from a heart virus. Most people who caught that virus died within a year of contracting it. He survived a DECADE with it. Physically? Older generations are much stronger.

This is a really good one. Thanks for bringing Dr. Lieberman on!

Carrying around all those books in backpacks and have to walk back and forth to school actually was good for us.

It is also nutrition like lack of vitamin K2 because we never cook with the bones in our modern diet

I worked at think tank after graduating college, and we were tasked with developing policy to reassert federal authority over physical education and to incorporate nutritional education into existing policy. I worked on the national defense aspect, as I had recently retired from the Army. One of my strongest points was the comparison between Gen X males and Millennial males. Gen X males had 20% greater bone density and 30% more muscle mass than Millennial males upon entering adulthood. It's a product of poor diet and a lack of engaging in strenuous physical activities as youths and adolescents. I saw the product in the Army. The recruits I started getting around 2008 were mostly worthless. They weak; physically, mentally, and emotionally. Have them do their job, they break. Counsel them for poor performance, they cry. Leave them alone to problem solve, nothing will be accomplished. We failed as society, and severely handicapped 2 generations. I will cost all of us.

I was an extremely active kid and strong as a horse. I'm a GenXer who idolized Arnold Schwarzenegger after seeing Conan. My parents got me a weight set when I was nine. I would often impress people with feats of strength. I'd be a lot worse off at fifty if it weren't for my hearty childhood.

Kids need to play outside. We all do, but kids especially. The sun, the fresh air and the movement is good for you. Unfortunately life in America is like moving from box to box. Socializing takes place in Walmart and we have horrendously bad parks. Nothing is walkable.

I’m a university teacher in Japan, originally from Canada. The boys here are often underweight, lacking muscle and good posture and without the energy to focus after lunch (from eating high fat high carb meals ). They often fall asleep at their desks. That’s also from the smartphone addiction of course. Thinking back to my uni days in the early and mid 90’s… I wasn’t aware of guys like this around me. The majority of young men were active, fit and had energy for school and work. Guys lifted weights and worked out at their sports etc. or Hiked and ran. My uni kids are even finding stairs difficult. Only a few appear to be aware of the importance of fitness. And when one reads about lacking of sex and dating in Japan, I think no wonder--the testosterone levels are low! Without adequate testosterone, of course men don’t have the drive to meet women, and nor would women find them attractive.

All they do is glued to their phones on tiktok and video games

Just basic manual labour from when young is enough to keep people fit, I know of ex marines who retire at 33 and then are finished with injuries to body and mind from overuse of BOTH ! Keep your life simple and survive, be boring and eat boring food, you will live a long boring life.

Arnold's jaw is a not a good example to compare people to. He has good bone structure, but arnold has admitted to using steroids. There are a lot of muscles in your neck, jaw and face. Steroids will increase the size of all those muscles, along with chewing all the food bodybuilders eat.

I participated in and won a president’s physical fitness award. We sewed them on the arms of our jean jacket.

Arnold is actually a baby boomer, and not Gen X

When I was in late elementary I actually looked older than when I was in middle school. Activity changes your looks.

I am an early, millennial, and I was quite weak during most of my childhood. Most kids were stronger than me during most of my childhood Perhaps it was because my autism made me an extremely picky eater causing me to only eat very small amounts. And food combined with physical exercise equals physical strength.

the thumbnail is misleading Arnold is a Boomer not gen x

No field work anymore. No going outside and lifting and climbing at a young age. Kids had to cut grass and bail hay all summer. They all stay inside now.

I'm a 24-year-old female, married, looking to start our family next year. And man, with all of this kind of great content I've consumed, my kids are gonna be barefoot, physically playing, NO phones, minimal screen time, whole food diet, gardening and hiking with me, the whole kit and kaboodle.

Kids these days are far more influenced to get in the gym from social media than ever before.

when i was growing up people were in incredible shape not so much these days and yes i notice a difference.

The US DoD did a analysis of JFKSW and USNSW training (Greaan Beret and SEAL) going back to the Vietnam war. They saw that inspitenof the programs getting safer and designed to mitigate bone fratures and ligature tears, that mellinials and even worse, gen z was having more bone fractures and ligature tears. They surmised that the screen time ad lack of bone density building excercises were to blame.

Thing that bugs me is that their unbothered by their weakness

Here in Australia the children play a lot sport in school… make sport a focus in the school curriculum.

I believe the nutrient density of our food today is so terrible that it’s not only Gen Z looking weaker but older generations are affected by it too. However, I’m a history fan and all the footage I’ve seen from WW1 and WW2, the men weren’t that big and muscular then. You can be smaller in size and still be strong. Most gym bro meatheads are not as strong as they look, and on top of it if they think they’re so big and strong and tough, why don’t any of them serve in the military? They just stand in front of mirrors taking pictures of themselves. They just pretend to be tough.

Bros; this means that the relative value of being swole is rising. Keep it up!

“Is there any evidence that our kids are getting weaker” Millennial here. I spent quite some time being inactive and sitting at home, a while back. My gf at the time was a genZ and 11 years younger than me and to this day she can not push a lawnmower for more than 3 minutes without falling to the ground and losing consciousness. A kid I work with, also a gen Z, can not run a mile and a half in under 13 minutes yet, I who hasn’t run in YEARS and aged 35, did it it! This generation sad. Lucky for millennials we were so close to Gen X.

My friend and I are very similar in age and background. I have lived a fairly active life. She has lived a strenuous one. She ran marathons and always had jobs in fields where her coworkers were male. My bone structure is sound. She has had 5 orthopedic surgeries. Looks like there might be a sweet spot.

Subbed. As someone that has never had their wisdom teeth out, and everytime I go to the dentist they are trying to make me, when I have no pain, I have perfectly naturally straight teeth, it shocks me how instead of resolving human issues naturally, we opt for surgical means....and usually in solving one problem we also address a raft of other issues.

I think this guy just gave the meaning of life the most powerful way ever: "Food in, babies out." 😮😮😮

I love my job, pushing/pulling heavy stuff, its like im getting paid to workout, stimulates my appetitte and i feel like a beast ready to go boom 24/7

It is not just a gym. People living sedentary life. They don't move anymore. Phone addiction, food addiction, and car addiction are the main reasons.

I wish I knew this in high school. I’m 35 now. Obviously we were all taught to exercise. But it helps knowing there’s a ticking clock for building bones until you’re 25-30

Less processed food and active travel to incorporate exercise into your everyday routine (ditch the car at least some of the time). Not sure about weight bearing exercise (as it can be so boring for a lot of people) but this is a start

Great interview

This reminds me of when a morbidly obese nurse advised me to loose weight….

I can't entirely agree with the menstruation part. Even though I'm a guy, I can assure you that what you eat is how you will develop, especially as a teen. and our foods are filled with chemicals that make teen girls develop faster I would make the assumption that teen boys eating too much estrogen-filled foods will make a boy look more feminine. It's all about what you eat not energy or whatever the doctor said

well in my experience, they show up to work without having eaten breakfast, then while they're sitting in the truck they scarf down a couple of pop tarts, drink some NOS energy drink, then they do a manic little dance around the jobsite for half an hour or 45 minutes or so, crash and are mostly useless the rest of the day, unless we stop at a gas station and they get another energy drink and a slice of greasy pizza... so yeah, not exactly Mister Universe type of physique.

I’m a 49 year old male in a company of 600 people and I am easily the fittest person in the company. However at school I was never above average so I have just maintained my fitness level it’s all the younger people who have become physically pathetic.

Hey, that's what's up, bro ... I am appreciative of your content. Thank you!

As a member of Gen Z, I'm grateful I got plenty of exercise. I walked a mile to and from school, had P.E, and dog walks were my responsibility after school. I'm still active now- physical job, gym membership and a mostly good diet.

It goes back to the parents who are either too lazy or too busy and exhausted with other things to actually parent their children! Parents see phones as pacifiers for their adolescent children! Their children grow up addicted to them and become worse off and therefore society becomes worse off! As difficult as it may be, parents should parent their children! Either teach and enforce better decorum to children when it comes to devices or don’t bring them in the home at all!

These are cultural changes. In the ‘80s we maxed these physical fitness standardized tests( push-up, sit-up, pull ups and 1-2 mile run). Our curriculum was different. Very sport oriented. We had weight lifting, gymnastics, and everyone participated in sports. Today, people are more sedentary. The culture can change. This is a by product of technology. I raised my children in a sport and a martial art( yes, they change overtime). We spend a lot of time outdoors. This lifestyle is not promoted anymore. Not in school or the media. Makes you wonder…

The fastest times at inter-school high school athletes may be about the same as 20 years ago. But the spread is much wider and the second reserve that never run are way way off.

Animals are often stronger than humans, but they also don’t live nearly as long. Perhaps the opposite argument to that being living longer doesn’t necessarily mean living better.

I'm weak but I try to be strong unfortunately working out doesn't solve emotional weakness 😂

Arnold is a Baby Boomer but even many of the GenX generation followed his example and was hitting the gym and overall we were healthier than the Gen Z generation.

I agree. I’m gen-x and kids today are really weak for some reason. Maybe it’s all the video games and lack of responsibility like physical chores.

I'm 26 and when I was a kid we lived outside practically. My mom was a neat freak and kept her boys outside to maintain a cleanly house...smart woman

My husband works outside in the son all day doing hard physical work. He is the happiest, most cheerful guy. I think that hard work and sunshine has a lot to do with it. I try to go out and do yard work now just for the endorphins.

I remember being in grade school in the 1980s and about 3 or 4 kids were overweight. I later taught in the Boston Public School System for 8 years, ending in 2008. And in every classroom at least half the class, usually more, were overweight. I can only imagine it's worse today.

This was actully really interesting... my girls are active pretty much every day of the week. I am a small woman, but my daughters are tall! They eat well and don't drink pop/ flavered sparkling water. They also love tough gum and have lovely jaws/ cheekbones ❤ I agree with this Doctor!

They aren’t weaker, they have less resources

The larger unsolved problem is plastics and the heightened amount of oestrogen hormones in literally everything. Male growth (for example) is stunted -- everything from food, clothing, hair and skin products/body wash/shampoo, toothpaste, parfumes/deoderants, plastic bottles (no, the lack of BPA doesn't mean plastic is now safe), our *tap water*, even as far as vinyl flooring. We've introduced endocrine disrupting systems as a form of convenience to our daily lives, and are *conveniently* still actively minimizing the role it plays in public health.

Fascinating conversation.

I lifted weights here and there growing up and throughout my teens. I quit for a couple years but picked it up again in my early 20s. I'm 45 this year and am in the best shape of my life. I have less joint pain now than I did in my 20s, I have more muscle and a good look to my physique. My posture is better after 23 years of consistent weight training- including learning what works best for MY body and what to avoid to keep injury free. I get more looks from pre-wall women, and more hate from post wall. lol. Keep going, it gets better!

I chewed gum all the time and my wisdom teeth were very impacted.

Gen Z might be physically weaker BUT their sense of entitlement is through the roof. Gen Z is a generation of rude, spoiled brats.

Older generations had higher GH and Testosterone because many more people worked physically demanding jobs.

One of the few things I’m thankful for about covid is the ability to avoid the office and walk, hike, cycle and generally be so much fitter than I ever had the spare time or energy for in my white collar job as it used to be.

Dude…. What are you talking about? Weight lifting is the most popular it’s ever been! 17 year olds are benching 225 like it’s just Tuesday!

The doctor looks healthy and he’s still sharp minded

Movement stimulates calcium production in the bones as well as maintains a healthy balance of osteoclasts & osteoblasts in the bones for proper repair and strengthening

The American School System is destroying todays Boys ! 😢

Team sports is still alive and well in my country for people of all ages. I think the biggest problem with our entire society (this also applies to you old bastards who think they're better than younger generations) is excessive consumption of digital media and the negative influences it can have on children who are left with it without adult supervision. I think if that is regulated better by individuals and parents everyone will live healthier, productive and more enjoyable lives

When it comes to being in the gym I am a millienial that is a long time natural lifter I noticed some other millienials when I was younger who used and abused anabolic steroids but the vast majority of lifters were natural these days I am seeing alot of the generation zoomers split just between two camps the horrible genetics natural guys and for the fit guys dead give away guys on steroids I would say in my 17 years in the gym I have seen the most 20 something year olds I have ever seen on steroids in other words this generation either lacks the natural genetics to build a good body or they are lazy and want a short cut to looking insane alot of them are going to regret it in 10 to 15 years majorly I am seeing it happen to people in my age group now 30 something year Olds

Gen Z is an embarrassing group. When I was boy back in the 1970's me and my mates would carry huge rocks about, whoever lifted the largest rock would get a cigarette and a beer. Good days!

Look up Wolffs law when he's talking about bone density. This should be considered basics in physiology.

F**k, I wish I knew all this when I was a child. I would have done things differently, instead of spending most of the time playing videogames as a teenager. Fun fact is that before getting ny first playstation at the age of 6 I was playing more outside, running, riding the bycicle, etc. But then I remember that as soon as my cousin bought the ps1 he spent much more time gaming and since I was spending most of my time with him I started doing the same. So my ignorance on bone and muscle growth and on the importance of getting a decent look, combined with my scoliosis and kyphosis issues caused me to look like a physically weak man that spend most of his time indoor. Needless to say that look is very important in dating and the more your body resemble the one of a girl the more girls will not be attracted to you. Yoi can always improve your body and grow muscles but 1) lifting weight is not exactly good for me as my muscle are always too much contracted and need more stretching and 2) main physical improvements (especially affecting bones, height, etc.) are made before age of 25, while I am over 30. I honestly wish I could go back with my new knowledge and do things differently, althought an issue with my childhood was that my parents had lack of time, money and energy to take me places and make me do post school activities, so they were more than ok with me spending most of tbe time at home.

Yep. Arnold is a boomer. I really don’t think eating all meat is what constitutes an omnivore. 😅

The main consequence of weaker jaws would be seeing more knockouts in future boxing and MMA

The very first nutrition book I read in my late teens, was by Dr. Weston Price, a dentist from Canada. He actually explored that theory many many many decades ago. He went to tribal, societies and found families that had siblings who went to live in more urban areas and compared their jaw structure and their teeth. And it is correct, the people who continued to eat their ethnic traditional diets had healthy teeth and more stronger jaws. The siblings who had gone to move to cities and more urban areas had messed up teeth and slightly smaller jaws. I do not follow his particular carnivore, heavy diet, I am a vegetarian however the principles are sound

Felt but that was also literally Arnonld S. Many people with the same facial structure today. Matter of fact, fitness knowledge is infinitely better now that it was then. We simply have more distractions and stressors now. And more chemicals.

he's a real life Simpsons character

im 49 and go the gym regularly. i have noticed many of the young ones are the weakest i have ever seen, the term no pain no gain does not exist in their head. i shouldn't be the strongest guy in the gym.

You couldn’t get me off the tennis courts when I was growing up and my right arm is definitely significantly bigger than my left. I had no idea that was why though