I never considered myself a gym person. Cardio was my go-to. As a New Yorker and mother of three, I considered myself aerobically fit - regularly doing cycling classes, tennis, long runs and dog walks ...

Struggling with chin-ups? Learn why you might not be able to do the move, plus a chin-up progression plan to help you nail it.

The next time you grab a pull-up bar, pay attention to where you place your hands because that can quickly turn a pull-up into a chin-up, and vice versa. While these two exercises look super similar, ...