Squat mistakes, like rounding your back, can increase injury risk and reduce results. Here's how to stop doing them.

Runner's knee, or patellofemoral pain syndrome, affects the area around the kneecap. It can be caused by overuse, muscle imbalances, or poor running form. For instance, a runner with weak hip muscles ...

Knee injuries are one of the most common setbacks for high school athletes, often impacting far more than just playing time.

Beloved by gym bros and reality show contestants alike, upper body strength exercises have multiple benefits for gym performance and daily life. And contrary to popular belief, you don't need to spend ...

Ask someone in the weight room to point to their trapezius muscle, or “traps” in gym-speak, and they’ll probably gesture toward the small mounds of muscle nestled in between their neck and shoulders.

Beth Skwarecki is Lifehacker’s Senior Health Editor and has been writing about health, fitness, and science here since 2015. Beth was the recipient of the 2017 Carnegie Science Award in science ...