Actually it s the large muscle groups at work that really tell your heart to do extra pumps. Each activity of these muscles demand increased oxygen supply and the only way to deliver this oxygen requirement is by delivering more blood to the muscles. Now that you have a clearer physiological picture, let s go to the factors that may affect your choice of cardio equipment. For example, if equipments with springs are exposed to dampness, the springs may get rusty and may lose its ability to compress and bounce back. In worst cases, equipment problems or failure could happen in the middle of the workout, causing accidents. Sometimes, it is not just failure to do regular maintenance that could affect the equipment s performance. 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. Treadmills can come with a lot of features. Generally speaking the more expensive a machine is the more features it has to offer. If you have excessive weight and bulging body fats, you surely are certain about your need to invest in such machines. It is not just another fad, although some people treat it as one. You should decide to tediously and strictly use your cardio exercise equipment if you want to make use of it. Make your investment matter. Identify what cardio machine you would like to have. There are numerous cardio equipment in the market, if you walked into a fitness equipment store, you could get overwhelmed with the different equipments and various models. Trainers, family members or your partner may recommend different kinds of equipment. Many experts assert that elliptical machines are more effective than other cardio exercise equipments in burning up more calories. It is important to observe the proper and correct use of this product. Stationary bikes are less intense in terms of calorie burning compared to other cardio exercise equipment.