The principle of motor unit or muscle fiber recruitment is one of the most important principles of physical exercise and health in general.
Understanding muscle metabolism, the aerobic and anaerobic systems and how they relate to the different muscle fiber types helps you to exercise smarter.
Skeletal muscles are one of three types of muscle, and in terms of muscle actions, they can only pull (contract) in one direction. They can’t push back.
How muscles attach to the bone around joints, and the angles these muscles create relative to joints determines the strength curve of an exercise.
If you want to grow muscle mass, otherwise known as hypertrophy or tone, there’s more to it than just doing bench presses and chest flies.