When using this, remember not to put most of your body weight to the handles. To be safe, hold the handles firmly on your first try. The arc trainer is non-impact cardio exercise equipment. You would be asked to step on 2 platforms. Start swinging your legs back and then forth. There is an adjustable resistance so you could better use speed. Treadmills are facilitating walking, running, and jogging indoors. You could adjust the speed depending on your purpose. These machines have timers and are usually featuring built-in calorie calculators. The treadmill could stimulate and use almost every muscle in your body. It is ideal for trimming down tummy bulges. Is the fitness equipment safe and easy enough not to require full time spotting or a personal trainer? Is it easy to adjust to fit into the individual s ability? Will it make the user feel invigorated from an exercise and not exhausted? Never forget to ask or consult your doctor, before purchasing any equipment. This machine is not the type that experts usually recommend to people who need to shed off more than 30 pounds of excessive weight. Tread climbers are among the newest cardio exercise machines in the market. They could be considered as the best cardio exercise. Needless to say, tread climbers are combining the wonders of a treadmill and climbing equipment. As you begin to walk on the belt your actual weight produces friction that is necessary for your feet to move the belt over the rollers. The belt turns underneath you as you walk in place. There are provided side rails which you can use for safety support. At the front portion of the treadmill you will find a console that serves as support for both the walking platform and side rails. Ask yourself: which cardio exercise machine to use: the one that brings the most fit, the tool that burns the greatest amount of calories, or the equipment that brings about least impact on your own joints? 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.