Natalie Grabow, an 80-year-old retired software engineer in New Jersey who’s “in the best shape of her life” Natalie Grabow, an 80-year-old retired software engineer in New Jersey, started her fitness ...

Fitness experts say people should be able to hold a plank for anywhere from 20 seconds up to two minutes, depending on their age. An 80-year-old Florida man has blown that goal out of the water, ...