Treadmills are the most common cardio equipment in commercial gyms. They provide the best value for money, as they cater to all types of users, from the untrained to the most serious athletes. Cross trainers allow members to get a good cardiovascular workout without putting too much strain on the joints, plus they give your upper body a nice workout. Exercise bikes are very simple to use and great for warm-ups. They can also be used for aerobic workouts and everyday exercise. Upright and recumbent bicycles can be a good addition to a commercial gym. Stair climbers provide a vigorous workout for the lower body and let you set the resistance to your liking. They can also give members of a gym a good challenge. To sum it up, a commercial gym needs a variety of cardio equipment to satisfy the needs of everyone. All types of cardio machines should be present in a commercial gym facility.