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?

Add Yahoo as a preferred source to see more of our stories on Google. Building strong, muscular quads is best done with a combination of compound exercises—squats, lunges, leg presses—and isolation ...

The longest bones in your body are your femurs, which are located within your upper legs. Connected to your femurs are your quadriceps, which are behind practically every movement that you do. This is ...

When you have achy, sore knees, working out is probably the last thing you want to do. But generally speaking, exercising bad knees can actually help them feel better. "While you might not feel like ...