Why do you become more tired the older you become?

Question

Less energy, can’t handle a trip out without sitting down. All this stuff, it becomes harder and harder as we age. Why?

In: Biology

Answer 1

Imagine your body is like a leaky ceiling. A few drops won’t damage it, but a few drops over the course of years will make damage. It takes energy to constantly fix the damage, and we only have a limited amount of energy everyday, and the more time goes by, the more damage there is to fix. When you’re 10, there isn’t that much damage to fix, so you have more energy to spare. When you’re 60, the damage seems to be the only thing your body has energy for.