Walk on the treadmill with an incline for 24 minutes at a pace of 3.5 to 5 mph. Start with an incline of 3.5 percent for the first five minutes. Every two minutes change the incline. Start with a 10 percent incline, followed by 6 percent, 10 percent, 7 percent, 12 percent, 10 percent and 12 percent, in that order. End with an incline of 4 percent for five minutes. Work your way up to doubling the workout for a total of 48 minutes by adding an additional two minutes every week. Add the corresponding incline percentages in order as you increase your time.