Drinking 500 mL of water (a half-litre or about a pint) increased the study participants metabolism briefly – for about a half hour. Eight glasses of water a day?
The study provides some support for the general recommendation to drink eight glasses of water a day while dieting. For most people that would add a Litre or two to their regular water intake. The extra calorie-burn would be about 100 calories a day if drinking 2 litres (2 quarts or 4 water-bottles full) more than usual. Dangers of Too Much Water Don’t start drinking an extra gallon of water a day – that can kill you, especially if you are fasting or eating very little. Water taken in must be in balance with body salt – electrolytes. Drinking and Walking Exercise such as walking causes the metabolism to rise and body water to be lost through increased respiration and sweat. Walkers should drink a large glass of water an hour before walking, and then drink about a cup of water every mile. When you finish walking, drink a glass of water.
