Water therapy Is usually done in the morning for weight management....it depends on the weight of the individual.A person with a normal weight should take at least 1litre of water,while over weighed individual should take at least 1.5litres of water.All these should be done immediately after waking up from Bed even before brushing.The water should be of Room temperature...it should neither be cold nor warm. kindly upvote and follow me for more of this.