Resistance training, using your own body weight, is excellent for you! Depending on your level of fitness at the current moment, either start with just your body weight and then upgrade to resistance bands. These are almost all you need. Just don't do the same exercises everyday, and change up your routine from time to time. With repetition, your muscles eventually don't respond as well to what you're doing. Resistance bands: On this page is a variety of bands you can get, just scroll down. And they're cheap! Amazon.com: Fitness Tube: Sports & Outdoors Here are some good bits of info. for you to peruse: Training with Body Weight - an Effective Way to Improve Fitness - Associated Content Body Weight Workout (No equipment needed) Great forums for information: Body Weight Training :: Index http://www.bodyweightculture.com/