Chapter 13 of 30 · 16 min read
By Omar AbdohUpdated
What this chapter covers
Every rep you have ever performed was governed by a single rule discovered in 1965. Understand it, and you will never again wonder whether to train heavy or light, fast or slow.
Your muscles are not uniform blocks of tissue. They are bundles of motor units — a single motor neuron plus every fibre it commands. A motor unit in your eye may control three fibres for precision. A motor unit in your quadriceps may control a thousand for raw force.
This book is educational and is not medical advice. It cannot account for your medical history, medication or injuries. Speak to a qualified clinician before changing how you eat or train, particularly if you are pregnant, managing a health condition, or returning from injury.
This chapter is part of the complete edition. Read chapter 1 free or see what is included.
Advanced Muscle Fiber Recruitment
Targeting fast-twitch vs slow-twitch fibers for maximum hypertrophy.
Targeting fast-twitch vs slow-twitch fibers for maximum hypertrophy.
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