Eli5: When you go to sleep weighing a certain amount and wake up weighing less. Where did that weight go?

Question

Eli5: When you go to sleep weighing a certain amount and wake up weighing less. Where did that weight go?

In: Biology

Answer 1

You breathe out carbon dioxide. That is actually the main way of losing weight, even when exercising.

The other thing is losing water. You constantly lose a little bit of water with breathing and sweating. And you don’t replenish when you’re asleep.