Drinking plenty of water each day can give you more energy, help you control calories, provide a full-body detox, keep your bladder healthy and keep you regular.
- Water can give you more energy. Dehydration can sap your energy and leave you feeling tired. Drinking water throughout the day can keep you from getting dehydrated.
- Water can help you control calories. Most soft drinks have about 100 calories per 240 mL serving. By swapping water for soft drinks, you could save yourself hundreds of empty calories each day. Drinking water also helps you feel fuller, so you'll be less likely to overeat.
- Water provides a full-body detox. Water helps flush toxins and unwanted waste from your body through the urine and the stool.
- Water can keep your bladder active and healthy. Being dehydrated may increase your risk of a urinary tract infection (UTI). Drinking plenty of water helps clean bacteria out of your bladder and urinary tract. This can also help you recover from a UTI.
- Water can keep you regular. Water helps keep stool soft and easy to pass.
How much water is enough? You've probably heard that you need 8 glasses of water each day. But where does this number come from?
The average adult loses 2.5 litres of fluid each day: 1.5 litres in the urine and another litre through sweat, breathing and bowel movements. But you don't need to drink 2.5 litres of water to replace this. About 20% of this fluid comes from the food you eat, which leaves about 2 litres that you'll need to get from water and other fluids. That adds up to about 8 glasses (assuming each glass is 250 mL) of fluids each day.
But the 8-glass rule is not set in stone. If your glasses are larger than 250 mL (and many are!), then you don't need as many. Plus, part of your 2-litre daily amount can come from other fluids, like milk or juice. In general, if your urine is pale yellow or colourless and you hardly ever feel thirsty, you're probably getting enough water.