If your fitness goal is to up the ante on endurance, pack more power into your sprint, or supercharge your strength gains in the gym, it’s worth exploring – what are the different muscle fiber types?

The film explores the muscular system of the human body, detailing the roles and functions of the three types of muscles: skeletal, smooth, and cardiac. Skeletal muscles, which are voluntary and work ...

There can get a point where you’re climbing mountains, navigating rough terrain, or carving fresh pow and feeling good —but not quite crushing it. If that’s you, it might be time to unlock a new level ...