I know that muscles are a good protein source and if we don’t eat enough protein our body will take it from our muscle mass.
However, regardless of how good you eat, after a year or so with no training you will see a reduction in size.
I’ve also noticed that to maintain current muscle size you don’t really need to keep intensive training, as long as you keep active and use said muscles and eat properly you won’t lose muscle mass.
So why is it that your body gets rid of muscle mass if you don’t use it even with proper eating?
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Muscle tissue takes energy to maintain, even if you’re asleep.
Humans evolved in drought-prone central Africa where energy was sometimes hard to come by, so we’ve evolved a number of energy-saving measures to survive long periods of poor food quality.
One of these adaptations is min-maxing your muscles. Muscles that you don’t use regularly get scrapped so that they’re not wasting energy.
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