Energy bar

Energy bars are loaded with sugar and carbs and are high on the glycemic index. Eat one while sitting at your desk, and youll feel the sugar rush and then the crash.

Get it guilt free: Though energy bars arent ideal for everyday snacking, they come in handy when youre exercising for longer than an hour. If youre going on a three hour bike ride, for instance, youll need to stop and eat about halfway through in order to have enough energy to pedal yourself home.