Importance of water

"Water is the only drink for a wise man." -- Henry David Thoreau

Especially when you're exercising!! Water fuels the cells of your muscles to break down and build up properly. To determine how much water you need to rehydrate, weigh yourself before you begin your workout. As soon as you've finished exercising, weigh yourself again. You'll notice you've lost a few pounds. Start drinking water and continue to weigh yourself until you're back at your original weight. This ensures you've got the minimum amount of water for your body to recuperate. Continue to drink your 64+ ounces throughout the day.

Although it's nice to see that you've already lost a few pounds after your hard work, in reality you're starving your muscles of what is going to help them. In the long run it's more important to rehydrate than feel like you've instantly lost a couple pounds.