Walking is a triple threat. It not only gets you where you're going, but also serves as a form of relaxation and, of course, as a route to weight loss. How do you make sure those extra steps lead to a smaller jeans size? Follow one of our three expert-designed programs to help you shed up to 10 pounds in one month. Just don't expect a leisurely stroll to success. If you really want results, you've got to push the pace. Aim for roughly 4 to 4.5 mph and a Rate of Perceived Exertion (RPE) of 5. (RPE is a self-measurement of how hard you feel you're working out, with 0 being no effort and 10 being heart-pounding, sweat-dripping super hard.) You'll also need to eat smart, but that won't be difficult thanks to our menu planner. Ready to become a slimmed-down sensation in 28 days? Let's get started!