system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: why do we lose weight more easily when we drink lots of water?
gpt
1. Your stomach has stretch receptors that tell your brain you are full. If you drink a lot of water, your stomach is streched out by a 0 calorie drink rather than a high calorie food. That's partly why eating a giant low calorie salad makes you feel as full as a small high calorie baked good. There are other things that contribute to fullness, but the stretch receptors are an important one.

2. If you drink cold water, your body has to burn calories to warm it up to body temperature.

3. You drink water instead of other high calorie beverages. You will swap out water for soda, juice, etc. That keeps those empty calories off.

4. Your kidneys have to burn more calories to get rid of all the extra water you drank.

5. Water is an important part of many calorie burning chemical reactions in your body. If you don't have enough water, your body stops the less necessary reactions to conserve water.