What are the best machines to use in the gym for weight loss?

Elliptical and stair. The elliptical uses arms and legs and is a total body workout. You can burn aerobic calories which burns fat and helps you to lose weight. The stairclimbers are also challenging. You can also loose weight using a treadmill with varying inclines. Interval training, where you alternate the degree of challenge, results in increased calories lost by your metabolism.