Jordan Stolz will leave the Olympics as the most-decorated individual athlete to represent the United States during this ...

Team USA's star speed skater has massive legs, leading to comparisons of another U.S. star athlete known for his quads.

Add Yahoo as a preferred source to see more of our stories on Google. Narrow stance — 0.7% of your shoulder width. Wide stance — 1.7% of your shoulder width. The wide stance used in the study was ...

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 ...

You've heard it a million times before, but still: never skip leg day. Longterm lifters know that leg exercises are what really separate the men from the boys, and if you're looking to build full body ...

BOSTON - Researchers have found that there are certain exercises people with knee arthritis can do to reduce their need for joint replacement. Experts said to focus on the quadriceps muscles, the ...

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 ...

The squat is a foundational movement for a reason. A compound exercise, it recruits multiple major muscle groups at once and builds functional fitness, helping you with everyday movements (getting up ...

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?