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. You've probably heard ...

Muscle and joint pain may overlap, but they can have different causes and treatment approaches. Muscle and joint pain can accompany swelling, stiffness, reduced mobility, and other symptoms. This ...

Muscle fatigue is a decreased ability to create force with your muscles. Electrolyte imbalance and overuse are some of the most common causes of muscle fatigue. Rest and massage are the best ways to ...

Muscle knots are highly irritated muscle fibers that have tightened into a ball in one area of your muscle. These painful, tender spots can feel sore and often occur in your upper back, shoulders, or ...

BARBARA FROM HOMA HAS A QUESTION ABOUT. MUSCLE PAIN. IN MY OPINION THIS IS A GOOD QUESTION. SHE WANTS TO KNOW IS THERE A CERTAIN AREA OF THE BODY THAT THE MUSCLE PAIN MAY BE IN? >> I KNOW YOU SAW ...

Like other parts of your body, your muscles change over the years. “As you age, your muscle fibers become less dense, which makes them less flexible and more prone to injury,” says Elizabeth Gardner, ...

Still dealing with a tight hip or weak glute—despite all the foam rolling, stretching, and strengthening? Or, maybe you’ve had an injury that keeps flaring up, even though you thought it was finally ...

I took creatine every day for 3 months to boost my strength training—here’s how it impacted my muscle growth, recovery, and ...

A short massage can do wonders before or after a long run.