Maria Menounous's favorite tip to control portions when trying to lose weight? Drink hot water throughout the day. "Hot water is like magic. It fills you up: it also is detoxifying, de-stressing, and helps digest the food in your stomach," she says. "You'll find yourself eating a little less if you're drinking hot water." Although Maria also recommends drinking tea or adding lemon to your mug, she opts for plain hot water, since it's more convenient, especially if you are using an office kitchen.