
Although I use an exercise treadmill I also have a lot of time for the other devices on the market. Indoor rowing machines provide an excellent workout if you can handle the intensity but they are a bit too much like torture for me. If that's your thing then the rower might be your perfect health inducing companion.
Elliptical trainers are another one that I particularly like and much more relaxed than the rower, a great choice for someone looking to get fit in a sedate manner. They are also easier on the joints when compared to running on a treadmill so you might want to check them out if you are getting a bit older and don't want to give your body to much of a pounding.