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

Everyone saying you breathe out enough carbon dioxide in 7 hours to make a difference on the scale is hilariously wrong. This is a very negligible amount. You shed off more weight from exfoliating hair and skin cells overnight than you do from exhaling.

The primary weight loss is via water loss from sweating