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

The same reason cars aren’t faster or more powerful if they have more gas in the tank. Fat is just a way to store energy. “Metabolism” is the process of turning chemicals into energy.