I tried Flex Lewis’ leg day routine twice a week for 3 weeks. Here’s what happened to my strength, endurance, and physique in ...

You can start slow and increase the challenge as your balance improves. (Kirsch recommends doing exercises three to four ...

An Instagram user described the challenge and wrote, “Give it a go! Hold your ankle, and that same foot can’t touch the ...

I recall one of Dr Stoyel’s pearls of wisdom about doing the leg raises first thing in the morning as “it frees up the headspace you would otherwise use thinking about doing the challenge”.