Fast-twitch muscles are responsible for high-intensity work like heavy lifting and sprinting. Here's how to build them and keep them healthy.

The human muscular system is complex and has many functions in the body, like mobility and stability. Learn more about the muscular system here.

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Muscle is a soft tissue composed of elongated cells (muscle fibres) that produce force and motion through contraction. Involuntary cardiac and smooth muscles are responsible for contraction of the ...