Water

While many struggle with weight-loss medications, a new study reveals that there is a much easier method that can easily shed excess kilograms from the body. The mechanism is not a "fat-burning" magic, but a combination of caloric savings and a slight, temporary increase in energy expenditure.

Dr. Jen Gunter, a health expert and TED speaker, explains the biology behind the body's fluid balance. It turns out that your kidneys and hormonal system know exactly when you need hydration, without the need for apps or forced drinking.