Diet pills come in all shapes and sizes, and they do all sorts of things for you. Take energy pills, for instance. There are plenty of reasons to take them, aside from the fact that more energy makes you feel better. They may not be specifically for dieting, but since your diet can be affected by everything about the rest of your life, it is a good idea to pay attention to whether you feel like getting off the couch. It’s hard to go to the gym when you don’t have the energy to leave the house.