One of the most well-known exercises is the squat. The exercise comes in countless variations — think: back squat, front squat, sumo squat — and can be performed with a variety of workout equipment, ...

Squats are a rockstar lower-body move. You can do squats pretty much anywhere, like while you're brushing your teeth or with a fully-loaded squat rack in the gym. You probably already are doing squats ...

Quadricep exercises target the quadriceps - a group of muscles sitting on the front of your thighs. If you've done one too many squats in the gym or had to climb more stairs than you'd like, you'll be ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. Ready for leg day?