What actually is a muscle flexing and does it serve any biological purpose?
In: Biology
When you flex a muscle, it moves. This moves the tendon it’s attached to, and that moves the bone that tendon is attached to. So flexing a muscle is how we move our bodies.
If you’re referencing the act of just flexing to flex and make a muscle look bigger, you’re actually flexing opposing muscles. If you flex your bicep to make it look bigger but not move your arm, you are actually playing tug of war with your bicep and tricep and don’t even know you’re doing it. The bicep flexes to pull the arm back, but the tricep also flexes to keep that arm in place at the same time.
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