bro this is hilarious

More research needs to be done on this.

The end killed me :D

Having watched to the end, I'm now not convinced this is for real.

early April 1st joke? I'm sure they'll allow this at competitions and Olympics. 😉

Doubt it

it's a good idea but I'd call this cheating, what if the swimmer swims in a different pool?

Omg that end was hilarious

🤣👍🏻

Hahahahahahahahahah

Sorry but you failed april fools with this video, posted a day early, plus your physics are wrong. Making the water lighter decreases the buoyancy of water instead of increasing it. Salt water which is heavier increases buoyancy . You should have had the swimmer breathe lighter air (helium) to make him more buoyant to make the joke work ;-)