Why do we need 8 glasses of water per day if our body just pees out most of it?

Question

Never made sense to me lol, anyway I’m going to sleep I’ll reply in 6 hours.

In: Biology

Answer 1

what comes out of your body isn’t the water you just drunk.

You’re expelling “used” water. Don’t forget that the human body is composed of more than 65% (I never remember the correct amount) of water, so you need to keep it hydrated all the time

Also, 5 cups of water is the wrong number. You should drink 50ml (1.7 ounce) of water per 1kg (2.2 pound) of weight.
So, let’s pretend you weight 100kg/220lbs, you should drink 5L/8.5oz of water per day.