Lunges are popular for toning and strengthening your legs, including a group of muscles called the quadriceps. Your quad muscles extend from your hips to your knees at the front of your thighs. Having ...

Whatever your fitness regimen, one thing you probably don't want to be skipping is quad stretches. Perhaps you sit all day (just us?), or, at the other end of the spectrum, you're used to exerting ...

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?

Plus, how to scale the move for all levels ...