How many ounces of fluids should a person try to drink each day and why?

Question

joel_the_boss · Answer

The old adage of 8 glasses a day is no longer true. Instead, think about how much you weigh and divide that number in half. That's how many ounces of water you should drink per day. For instance, a person who is 200 pounds, should drink 100 oz. of water per day to be adequately hydrated. 

Hope it helps. :)

surryyy · Answer

ok. thank you. but can i ask why?

joel_the_boss · Answer

Its to keep you properly hydrated. Have you gotten a headache or a cramp if the middle of the day for no apparent reason? I bet you have, these are all caused by dehydration. You think one cup a day makes things better but in reality you need way more. 
Do you understand?

surryyy · Answer

oh ok. thank u i understand ;]

joel_the_boss · Answer

Your welcome. :)