Eating option for normal and fast weight loss: The human body needs calories to function normally. Typically, women need up to 1,600 calories a day, and men 1,800 a day. For people who lead a sluggish lifestyle, for example, it will never be like a fiddle to invest a dominant portion of your energy in relaxing on the couch, no matter how enthusiastically you try to lose weight. Note that this is not a simple rule of thumb for getting in shape, but rather a no-nonsense article on mindfulness of the lifestyle that usually leads to weight loss and strong life.