A gallon of water a day keeps the... With Summer just around the corner, I wanted to "cleanse" my body. All thanks to Ciara on The View. She mentioned how she drinks a gallon of water a day so stay fit and healthy. Lightbulb! So, i ordered this gallon water bottle (not sponsored) last week, and has started drinking the whole gallon of water a day. "If the human body consumes 16 ounces of water in a given hour, the metabolic rate will spike by as much as 30% for the next 30 to 40 minutes. By committing to drinking half your body weight in ounces of water each day (or aim for that gallon), research says you can expect to lose more weight." So, just an idea if you want to stay healthy for upcoming Summer!