If food/stored fat are the body’s source of energy, why are overweight people typically more sluggish?

Question

If food/stored fat are the body’s source of energy, why are overweight people typically more sluggish?

In: 2

Answer 1

Energy is not power. Using a car analogy: being fat is like having a huge fuel tank; it’s not like having a huge engine. Carrying around masses of fuel makes you slower, not faster.