Squats are a super-move for the lower body. Do enough of them and you'll whip your booty into shape—and a whole lot more. "Squats mainly work the glutes, quadriceps and hamstrings," points out Denise ...

Squats can be performed anywhere, without the need for equipment, making them an incredibly accessible exercise.

This simple tweak to your regular squat routine could dramatically improve joint stability, balance, and long-term strength.