Question

¿Por qué la gente dice que los músculos pesan más que la grasa?

Answer 1

Muscles are compact compared to fats. They weigh much more than fats for they're denser.

Answer 2

They actually both weigh the same, a pound is a pound. The volume of them is different according to the weight though. Muscle is denser than fat, so 1 kilo of muscle would take up less room than 1 kilo of fat.