The misconception that muscle can be lean or bulky lies in its appearance. “When people (say ‘lean’), they’re usually ...

There can get a point where you’re climbing mountains, navigating rough terrain, or carving fresh pow and feeling good —but ...

Bone structure, how easily you gain muscle, and where you tend to store fat all help define your somatotype (body type). Learn how to personalize your fitness goals based on your body type.

Skeletal muscle is the type of muscle that controls movement. Problems with these muscles can be minor, life-threatening, or ongoing problems that make it hard to perform basic daily activities.