A study in 2014 found that the rate of calorie-burning went up by 2-3% after drinking ½ liter of water. But too much drinking water is harmful as it will only strain your kidneys. Once your urine is white, it is an indicator of sufficient water. Limit it to 12 to 15 glasses depending on your activity level and your body weight . It will help in weight loss and will be good for your overall health.