What are 3 uses of energy in the body?
Growth, Repair and Movement
Metabolism, and pretty much anything you want to add after that. Breathing uses energy, your heart, your brain, just using your body to walk around or look at something uses muscles which in turn use energy to contract. so ANYTHING that you do even if you sit on the couch all day your body will burn almost 1000 calories just from everday cell growth and exsisting.
The body does not "lose" calories, per say. Instead, it uses them. Calories are what provides the body with energy. This energy is what allows things like our heart to beat, for our muscles to move, and to give us the energy to do things like walk and play sports. By doing activities, the body requires energy to do so and it uses the calories stored in our body (first it uses those stored in…