The main thing that causes rapid or slow weight gain is the metabolic system and the process of burning calories. The higher the metabolism, the food is digested faster and burn more calories, so it does not cause fat deposits in the body.
Metabolism is the process of the body that convert food and beverages consumed into energy. During a complex biochemical process, calories in foods and beverages that are combined with oxygen to release energy needed for bodily functions.
Black coffee is one drink that can help increase your metabolism. In addition to fat-free, black coffee (without sugar) is also free of calories that can play a role in weight loss.
Several studies have shown that the caffeine in black coffee may act as a temporary appetite suppressant, so it can reduce the desire to eat, as reported by mayoclinic, Tuesday (31/05/2011).
Caffeine is also believed to provide a temporary boost to the body's metabolism. In this case, the body will digest the food to produce energy and heat a little faster than usual. This process is known as thermogenesis.
Caffeine can also stimulate physical activity, which burns extra calories. If caffeine makes you feel more awake, you can burn more calories through increased thermogenesis and physical movement. However, the impact of caffeine on thermogenesis varies from person to person.
For some people, the caffeine in black coffee also acts as a diuretic. This means that caffeine causes a greater excretion of water from the body that is in the form of urine.
Therefore, black coffee can promote weight loss through water loss from the body. However, this reduction is usually not permanent, because the body does not lose any fat.