Why do muscles need to lift weight to grow?

Question

As opposed to the human body controlling muscle growth from within?

In: 76

Answer 1

The human body is amazing at adapting to its surroundings. If you lift weights regularly, it tells your body “we need these muscles”. They grow larger because of that. Conversely, the same is true, if you don’t use your muscles they will shrink because your body doesn’t use them.