The following is written by Kristen Mccaffrey on slenderkitchen.com:
Lots of people don't realize the true importance of drinking enough water everyday and how it can impact both your health and your weight loss efforts. According to experts in a recent study, drinking just 2 cups of water, which is smaller than the size of a bottled soda, before meals helped dieters lose an extra five pounds yearly and help you maintain your weight loss. Additionally drinking the right amount of water daily can actually speed up your metabolic rate and help to curb overeating when your body confused hunger and thirst. But how much water is enough? Here is how to calculate how much water you should drink a day for both health and weight loss benefits.
Your weight: The first step to knowing how much water to drink everyday is to know your weight. The amount of water a person should drink varies on their weight, which makes sense because the more someone weighs the more water they need to drink. A two hundred pound man and 100 pound woman require different amounts of water every day.
Multiply by 2/3: Next you want to multiple your weight by 2/3 (or 67%) to determine how much water to drink daily. For example, if you weighed 175 pounds you would multiple that by 2/3 and learn you should be drinking about 117 ounces of water every day.
Activity Level: Finally you will want to adjust that number based on how often you work out, since you are expelling water when you sweat. You should add 12 ounces of water to your daily total for every 30 minutes that you work out. So if you work out for 45 minutes daily, you would add 18 ounces of water to your daily intake.
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