Knowing about the muscles will assist you to understand better how the muscle
Promax Pump building supplements function and how they can assist you to build bigger muscles. The muscles can be categorized as the contractile tissues. This categorization will be according to the nature of the muscle fibers. The 2 main categories are fast twitch and slow twitch. While the first kind of muscles can contract for an extended period of time and need little force, the other muscles comparatively contract faster and are responsible for energy and power in the human body.