Answer:
Diet
Explanation:
Without a proper diet, muscles aren't nourished enough to engage in physical exercises. The muscles require protein and vitamins in order to function properly. A healthy diet is even more important than exercise because every performance of the human body is possible due to the vitamins we consume through food.
While both exercise and diet are main contributors to weight loss, if we didn't maintain healthy diets, we wouldn't even have the brains to answer questions like these.
Thank me later :)
(Or just give brainliest)
