｜如果你家岳父，說話三句不離運動與經營學…？
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► 59歲的孟芬熱衷健身，49公斤的她，推起槓片加槓桿全部75公斤，看起來卻不費力，孫女們叫她「運動阿嬤」。
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2019年，運動阿嬤初次報名健美比賽，更是逼自己在三個月內把體脂降到9。
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► 說起她接觸運動的源頭，其實是為了經營夫妻關係。
「年紀輕的時候大家各忙各的嘛！他忙事業，我忙小孩，對不對？大家都很忙，沒有交集啊！」
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「七八年前，那時候我就已經空巢期好幾年了，所以才決定說我要跟著他。」
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先生蔡鑫經商，也是位運動狂熱者，他喜歡跑馬拉松，正在收集世界六大馬，現在夫妻倆用跑馬拉松環遊世界。
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► 無論在公司還是家裡，蔡鑫說話總是三句不離運動與經營學，他更把「跑完42公里馬拉松」，變成給兩個女婿的考試。
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「當我的女婿都要跑初馬！」
晚餐團隊忍不住發問，如果不跑，還是可以當女婿嗎？
「我想，我女兒應該都會聽我的話吧，哈哈哈」他笑答。
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► 大女婿元豪原本討厭跑步，當年為愛跑完全馬。如今，他卻成了這個家裡，和岳父關係最緊繃的人？發生了什麼事？
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​嘉賓到訪這天，幾個月沒和岳父母往來的女婿，終於出現？而晚餐團隊臨時起意，請這家人準備對彼此問問題！
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► 究竟，他們在餐桌上會發生什麼直面對話？
► 又是哪位嘉賓上門，陪這家人談心又聊運動呢？
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　🏠 公視 誰來晚餐14-29：想當我女婿，先跑42K
　　 ​ Marathon of Love
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| 5/19（五）21:00｜公視首播
| 誰來晚餐YT 同步直播
| 你還沒認識的家庭故事，你還沒認識的台灣
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59-year-old grandma Song Meng-fen works out daily and competed in a bodybuilding contest four years ago. Meng-fen’s husband, Cai-sin, may be in his sixties, but he’s still an avid marathoner who travels the world running marathons with his wife. Cai-sin and Meng-fen’s business success is a real-life rags-to-riches story, and today, after much hard work and sacrifice, they can bask in their achievements. However, realizing their dream of living their golden years in a three-generation house with their kids and grandkids is proving more complicated than they imagined. In this episode, we meet Meng-fen’s family as they try to find a balance between the generations. What difficult mission has Cai-sin assigned to any would-be sons-in-law? How come the siblings wouldn’t dream of working beside their father? What influence has Meng-fen and Cai-sin’s free-range parenting had on the kids? Let’s find out!