The lying leg curl is a must-do exercise for strengthening the back of your legs, but nailing the technique can be tricky.

When people want to get taller, they wind up on Dr. Kevin Debiparshad's operating table for leg-lengthening surgery.

You only need one piece of equipment to thoroughly work your lower body. This dumbbell leg workout is proof. Want to build the explosive lower-body power of a defensive end? Try Aidan Hutchinson's ...