You can drink hot water before or after a meal to help you lose weight. You can also alternate between cold and hot water. Drinking water before meals helps you feel full faster, therefore you tend to eat less. Cold water consumption actually speeds up the bodies metabolism which burns calories. On a daily basis you should consume three quarts of water.
There is no evidence that drinking hot water after a meal helps you lose weight, but for sure drinking a glass or two of water at normal temperature before meals helps you lose weight because that cuts your appetite making you feel full. Also, drinking twelve to fourteen glasses of water during a day helps you lose weight, together with a good function of your body.
Hot water has not been proven to help you lose weight. Hot water does have health benefits. It improves circulation and can also help boost your immune system. Hot water is easier for your body to process than cold water is.