Let's be clear about one thing: In order to change your body, you do have to try a little. That being said, you also don't need to spend hours on the treadmill to get in great shape. You don't have to kiss your social life goodbye, or even designate an hour per day to get your gym fix in order to see results. And perhaps most significantly, you don't have to spend a lot of money. You actually don't need to spend any at all.