Elliptical machines are an idea whose time has come. In recent years, ellipticals have surpassed the stair master and treadmill in popularity. The natural motion of elliptical machines makes them conducive to the long duration exercise needed to burn sufficient calories. This is evident at the gym, where you'll notice that people seem to stay on them forever. Let's explore some the reasons for the elliptical machine's popularity.

The oval shaped motion of an elliptical machine is significantly easier on the joints than running on a treadmill. Unlike the bike and rowing machine, ellipticals provide a weight bearing workout which aids in the prevention of osteoporosis. Elliptical machines provide an impressive range of knee motion, hip extension and hip flexion. This not only increases the amount of calories the elliptical can burn: it makes the ellipticals an excellent machine for post-rehab exercise. In fact, the body position used on an elliptical machine minimizes the aggravation of knee injuries. The ellipticals also use significantly more of the hamstring muscle than other exercise equipment. Keeping hamstring strength proportionately balanced with the quadriceps is a major factor in preventing injuries.

As if the health benefits of the elliptical machine were not enough, consider this. The forward motion of the elliptical machine allows you to use 40 percent more gluteal action than other machines, which means that you are not only burning more calories, you are developing a great behind!

In choosing an elliptical machine for your home, look for a minimum 21 inch stride length with an adjustable incline and adjustable resistance. Decide how many pre-set programs you want and need. Also, consider whether or not you want to spend extra to purchase an elliptical with a heart rate monitor. Just think. If you purchase an elliptical for your home, you'll never have to wait for one at the gym!