your body needs 2 1/2 gallons of water each day.
If your on about how much liters of water you need in your body, well. . . You would need to drink at least 5 cups of water. So from Half a Liters to 1 and a half. But BE CAREFUL you don't overflow your body with fluids!
You need water in order to survive because if you don't you're going to dehydrate and if you have to much you're pretty much a drowned so keep your body hydrated andrink water daily just talk to much
a lot of liters.
Half of your body weight in onces
They should drink as much as their body tells them to. Your body has thirst sensors and they will tell the runner if they need to drink and how much.
You need water because 75% of your body is water and without water your body would stop working.
they all need water
because some of your body is water.
they all need water
You need water because your body is mostly water
A lot... The body is 75% water.