you have to drink 6.25 cups
Generally you are supposed to drink around eight cups a day if you are active, but many people drink five or six if they are not superstar athletes and they are hydrated.
That is 11.8 cups
There are 16 cups for every gallon of water. There are also 128 ounces in a gallon.
An adult should drink at least 6 cups a day.
I don't drink 8 cups of water a day so their is possible people who don't drink water to.
8 cups
Thirteen Year Olds Should drink About 7 Cups Of water xD
2.5
3 more cups
As much water as you want.
4 cups