For your body to function properly, you must maintain your body’s water content. You actually lose water simply by breathing, through perspiration or sweating, urination, and bowel movements. What you may not realize is that you eat your water too. Water rich fruits and vegetables are a good source of fluids, and it provides about 20% of the required amount. Alcohol and caffeinated drinks should be consumed in moderation as they cause the body to actually lose more fluids.