Water is free, calorie-free and often overlooked in weight loss plans. Staying well hydrated supports your metabolism, helps you feel full and makes your body more efficient at burning fat. But how much water should you actually drink to lose weight?
A common guideline is to drink about 30 to 40 millilitres of water per kilogram of body weight per day. For a 70-kilogram person that is roughly 2.1 to 2.8 litres. If you exercise or live in a hot climate, drink a little more. Thirst and pale-yellow urine are simple signs that you are on track.
Drinking water raises the number of calories you burn at rest for about an hour. In one study, drinking 500 millilitres of water increased metabolism by up to 30 percent for a short period. Water also suppresses appetite: drinking a glass before meals helps you eat less. Replacing sugary drinks with water cuts a significant number of calories every day.
One of the easiest habits is to drink a large glass of water about 20 to 30 minutes before eating. This fills your stomach and reduces the amount of food you eat at the meal. Combined with eating slowly and stopping when satisfied, this simple habit can meaningfully reduce daily calorie intake.
While hydration helps, drinking extreme amounts of water is unnecessary and can even be harmful. Very high water intake can dilute sodium in the body and cause an imbalance. Spread your water intake across the day rather than drinking huge amounts at once, and let your natural thirst guide you.
Carry a water bottle with you and refill it regularly. Add lemon, cucumber or mint for flavor without calories. Drink a glass first thing in the morning, before meals and after exercise. Over time, hydration becomes a habit that quietly supports every other weight loss effort - including your diet, sleep and training.