You stick to your diet, but you do not know why you do not lose weight? Did you know that you can get hundreds of calories from sugar-sweetened tea, juice, soda or from alcohol? These are liquid calories or empty calories because all they do is give you extra energy without any nutritional benefits. So, if you really want to see some pounds disappearing, stick to water in which you can add fresh lemon, orange or mint for flavor, and unsweetened tea.