Jim Dreeben, 83, took up CrossFit in his 80s and got hooked. He does 100 push-ups and also planks six days a week, and his doctor told him to keep going. Dreeben's active lifestyle includes kayaking, ...

Jim Dreeben has always been active, but it wasn't until he was in his 80s that he took up CrossFit. Dreeben, a retiree in Riverhead, New York, now does weekly CrossFit sessions and 100 push-ups six ...

CrossFit rivals Games of Thrones or The Bachelorette in terms of the sheer number of stans obsessed with the workout. But if you're new to the "sport of fitness," the first thing you should know is ...