Are you slouching right now? Well, stop it!
Sitting up nice and straight will not only make you look ten pounds thinner, but will also burn extra calories by engaging your abdominal and back muscles. Think of sitting up straighter every time you hear a phone ring or stop at a red light. These constant reminders will help you turn good posture into a habit, so that you’ll have it all day long.
…and if I don’t already sound enough like your mother, “Eat your vegetables!”