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?

what are the best and worst quad exercises for muscle growth well in this video I'll be ranking 20 of the most popular movements on a tier list from s for super to F for fail and at the end I'll Crown ...

Stretching isn’t the most exciting part of a runner’s routine, but the benefits of a good stretch can’t be understated. That ...

Building strong, muscular quads is best done with a combination of compound exercises—squats, lunges, leg presses—and isolation work, such as leg extensions. Tack on some powerful plyometric moves, ...

You practice quad stretches all the time in yoga, whether you’re aware that’s what you’re doing or not. But you might be more familiar with its opposite action, quad contraction--you know, that ...

We get it: Post run stretches can sometimes feel like a waste of precious time. After all, they don’t leave you sweaty, breathless, or sore—perhaps leading you to think they aren’t a “productive” form ...

In November, I ran the New York City marathon for the first time. In the months leading up to the race, I consistently prioritized one thing in my training regimen, even more than running: stretching.

(CNN) — As you head into the gym, you likely already have a workout plan in mind. Maybe you’re taking a light jog on the treadmill, or you’re working on some bicep curls on arm’s day. To get the most ...

Research shows these five exercises can improve your running performance.