Sit-ups may seem like a basic and simple exercise. After all, to do this classic exercise, you just have to lie on your back with your knees bent and feet flat on the floor, raise your torso towards ...

THE CLASSIC SITUP is a workout staple. Whether you learned how to do the movement in gym class or from watching a Rocky training montage, you've probably performed more than a few sets over the years ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Getty Images We’ve said it before and we’ll say it again — when it comes to building a ...