You've probably heard that most of the human body is water, but exactly how much water is there? The average amount of water is around 65%, but the percentage of water in one person may be quite a lot different compared with how much is in another. Age, gender, and fitness are big factors in how much water is in the body... Learn more
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i am really concern on how did u find that out .i take health in middle school an i had to find out this answer.may u explain to me how u found out