Stationary step machines or stair climbers would allow you to check how much calories you have burned when exercising. Some people find this equipment to be the most difficult of all the cardio exercise equipment. They provide great workout for the lower body as long as you use it properly. It could cause problems on knees and feet if the weight and force are not used properly. It is the common equipment for individuals plagued by lower back problems as well as chronic back pain. This bike follows the go-cart design which allows you to sit in a reclined position with the legs stretched out rather than extended downward. This model offers both comfort and more efficient buttocks workout as compared to its counterpart. Recumbent bikes, on the other hand, have bucket seats so you pedal out in front of you. If you are new to exercise or prefer more back support because of a lower-back pain, you may find a recumbent bike more comfortable to use than an upright bike. 2. Stair climber is an excellent workout machine for your calves, thighs, hips, buttocks, and lowers back. All these are of course valid concerns that you should not be neglecting. Bryant A. Stamford, an exercise physiologist, asserts that none of the questions could be considered as the most important to ask yourself. Instead, one good and logical question you should ask yourself is: Which cardio exercise machine do you truly want to use? For example whether you are buying pre-owned equipment or brand-new ones, check the motor, intensity and resistance levels of the workout, and if you would be able to take advantage of these. Take a look if the machine s motor will be operating smoothly. Yearly, Americans would spend millions of dollars in purchasing cardio exercise equipment which is sometimes used or just placed in the corner to gather dust just because they are the wrong equipment for you. But then again it can provide a much more satisfying workout experience. The running belt is being operated by a self-powered motor that is situated beneath your feet. The trifecta of walking, jogging, and running is allowed since the speed of the machine can be adjusted. In this type make sure you warm-up properly before going to higher speeds.