I have looked at answers on the internet, but I still don’t get why if someone is exclusively **drinking water** for a period of time, the weight lost is **also water**… which does not provide energy nor is scarce for the body during that time.
Is this real? Why does or bodies behave that way?
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First, if you are not consuming calories, your body is going to use stored energy. One of those energy stores is glycogen, which is stored in the liver and muscles. Glycogen is easily converted into glucose which your body can use for energy. Glycogen is stored with water in a 1:4 ratio. That is, every molecule of glycogen takes four molecules of water. So, as you use glycogen, there is excess water released.
Second, water is a byproduct of cellular metabolism, so if you aren’t consuming calories through food, but expending them metabolically, then you are going to be producing some excess water.
Third, sodium also causes you to retain water. If you start drinking a lot more water than normal, you are going to dilute the amount of sodium in your body, which will allow you to release a lot more water since there is no sodium to retain the water.
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