Why isn’t our dominant hand’s bicep disproportionally larger than our non-dominant hand’s bicep?

Question

Considering we use our dominant arm for lifting, most tasks, holding things, etc.

In: Biology

Answer 1

Muscles grow when they’re broken down. In order to break down a muscle you need to push it beyond what it’s used to. You might use your dominant hand for more daily tasks but 99% of them aren’t creating enough resistance to break down the muscle, and for the few that do you most likely end up using both hands.