The Mayo Clinic recommends that adult women drink 9 cups of water per day, and men 13 cups per day. Not only does this keep your body hydrated and healthy — it also prevents your body from confusing thirst with hunger. If you drink enough water to fill up your stomach, you can trick your body the other way, into thinking it’s full of food when it’s really full of zero-calorie water.  Remember that these amounts are general guidelines and the amount of water required will vary based on your weight and activity level. Keep a water bottle with you so you can sip on water throughout the day. Know how many ounces of water your bottle holds, and make sure you refill it enough times in a day to reach your water goals. If you’re feeling hungry, drink a glass of water and wait 10 minutes. If you’re still feeling hungry, eat a light snack. You’ll often find, though, that a glass of water can stave off snack cravings. One of the easiest ways to cut large amounts of calories from your diet is to stop drinking your calories. The energy drink you use to get your day started, the soda you drink with lunch, and the beers you grab with friends at the end of the workday — those are all empty calories added on top of the actual food you eat. A couple alcoholic drinks with friends might be an important part of your social life. Just make sure you don’t drink to excess. Have water while you’re drinking, both to keep your body hydrated and to keep you from drinking too many alcoholic calories. Aim for a one-to-one ratio of alcoholic drinks to glasses of water. If you’re one of the many people who has trouble getting started in the morning, don’t worry! Experts count coffee and tea as part of your daily water intake. If you’ve relied on energy drinks in the past, these unadorned caffeinated drinks are a much better way to wake yourself up.  Don’t add calories to these drinks with unnecessary additions. A caramel latte or Frappuccino will be full of added sugar and calories from milk, whipped cream, and flavoring syrups. A plain cup...

TL;DR in Vietnamese:
Uống nước mỗi ngày để cung cấp đủ lượng nước cần thiết cho cơ thể. Thay thế các loại nước có chứa calo bằng nước lọc. Sử dụng cà phê và trà. Tạo thêm hương vị cho nước uống bằng trái cây. Hớp một vài ngụm nước trong khi ăn. Uống nước trước và sau khi tập thể dục.