Low-impact cardio workouts used to be limited to bikes but now elliptical trainers have given you more variety for this type of workout.
Because of their ability to give you a great, heart-healthy cardio workout while still nursing your joints, the elliptical trainer has become quite popular and is one of the most sough-after machines in the gym.
The elliptical trainer also has low impact on your knees, ankles and hips, areas that are usually highly impacted when doing a cardio session. This lessens the chance of fatigue and injury and will help keep you on track with your training regimen. The only real problem you may face with an elliptical trainer is choosing which one to use at the gym or which one to buy for your home.
Because these machines look expensive, people often think that they are completely out of their budget range. This could not be further from the truth. A very basic model such as an Orbitrek will cost you upwards of $200, no more expensive than some exercises bikes. Higher-end models can cost upwards of $5,000. The bigger price does not necessarily mean a better product- you should try a few out and see which one is right for you.
You will want to look into the stride length- some are very limited while others are for tall people.
Try a few reps on the machine and find one that is comfortable for your height. Safety features like handrails and rubber grips are also essential. Adjustable resistance that will grow as your workout level grows is absolutely essential as well.
You may want ones with built-in heart monitors and the like, but get one that has at least the aforementioned essentials and you will be in good shape- literally and figuratively.