Elliptical trainers, also known as cross-trainers, are fast becoming one of the most popular pieces of equipment in gyms around the country. Elliptical machines combine the beauty of natural running outdoors or on a fixed treadmill with the resistance work of a stair stepper. On elliptical trainers, you place your feet on pads and then move them in a sort of gliding or cross-country skiing motion. Elliptical machines work the legs and also give you a good cardio workout if you work hard enough. Most elliptical machines also have handles that coordinate with the pedal movements, providing a complete workout for the upper and lower body. There are some sites give you details about how elliptical machines work. When it’s time to get your own elliptical machine consider to buy high quality machine, a cheaper model will tend to break down frequently. It is also a good idea to read product review before purchasing.