I'm 76 and joined a fitness group in my 60s. I still train every day and can do 5 muscle-ups.

Ngai Hin Kwok, 76, says he doesn't see a reason to slow down just because he's older. Amanda Goh for Business Insider. Ngai Hin Kwok, 76, has led an active lifestyle since childhood. Even after retiring, he still works part-time because he's physically able to. He enjoys cycling, practices calisthenics, and can still manage five muscle-ups. This as-told-to essay is based on a conversation with Ngai Hin Kwok, a 76-year-old living in Singapore. It has been translated from Mandarin and edited ...