Water. It is a beautiful and natural-occurring human power source. Our bodies need water to function and thrive. But how much exactly do we need? At one point in time it was recommended that we all need to drink 8 glasses a day to stay in peak physical condition. This was recently disputed as nothing more than a mere guideline, rather than based on scientific evidence. Now daily recommended water intake depends on size, weight, and activity level but in general should be between half an ounce and an ounce of water for each pound you weigh, every day. So if you weigh 150 pounds, you would need to drink 75 – 150 ounces of water a day. If you’re super active and live in a warm climate, you may need more.