You might think flexibility is something you're born with -- you either have it or you don't. Even if you did have it, ...

Compound exercises use multiple joints to facilitate movement, while isolation exercises engage only one. Each form of ...

Many cancer survivors struggle with muscle weakness, which can be so profound that they may have difficulties walking up a couple of flights of stairs or going shopping for groceries on their own.

If you're looking to fill your shirt sleeves, consider this your guide. Find out how many bicep curls it takes to build muscle and which weights to choose.

Immune cells release special proteins called cytokines—chemical messengers that help spark muscle repair. But cooling the muscles too soon, like with an ice bath, can reduce this natural response.

Mike: So it used to be called strain, counter strain, and now it is called positional release technique. Instead of aggressively stretching the painful area, going the opposite direction, and digging ...

Most people have complained of a muscle knot at one point or another. But that got us thinking, can your muscles actually twist into knots? Or is it something else entirely? Brad Dixon is a ...

Everyone's body will respond differently to exercise. Experts say muscles indeed provide benefits but they are not an indication of overall fitness.

Everyone's body will respond differently to exercise. Experts say muscles indeed provide benefits but they are not an indication of overall fitness.

q I have a painful spot on my thigh muscle, which is tender to touch. Athletes sometimes develop this after repetitive movements, especially if they do not stretch after exercise. These are called ...

While the idea of “micro-tears” in your muscles might sound unsettling, they play a crucial role in muscle development and strength gain. What causes muscle soreness?

You can get big muscles in minutes without doing any exercise. But the benefits are purely aesthetic and the risks enormous.