12 ways to get the metabolism of a 25 year old

If you’re looking to speed up your metabolism, ensuring you get the proper amount of water every day is probably one of the oldest health tricks in the book, but not just because it keeps skin hydrated or helps prevent overeating. A small study in the journal Frontiers in Nutrition found that drinking water can actually lead to weight loss, possibly because it can increase metabolism. “It takes kilojoules to process water, because everything we do takes kilojoules,” says Lauren Pincus, MS, RDN, author of The Protein-Packed Breakfast Club. “The more water, the more kilojoules you need to expend.” She suggests aiming for around two litres a day, but the exact amount depends on your activity level and age.