I can quite confidently guess that the idea of growing bigger muscles has crossed your mind in the past, or perhaps even a few seconds ago.
Not everyone responds to physical exercise equally. Image credit: US Air Force via Wikimedia
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Growing and sustaining our muscles is indeed not just the matter of good looks. When people are stronger physically, they usually have better chances to avoid injuries and occupational trauma, their lifespan tends to be greater, and their overall quality of life is much better.
So how do muscles grow? It is true that they need constant attention, but just visiting a local gym is not enough to accomplish this. Watch the video below for an interesting and visual presentation about the mechanisms that activate the growth of muscle fibers, and also why it is important to keep a good balance of proper nutrition, hormones, and rest: