It has strong well-calibrated 5 springs good for exercising your Chest and arm muscles. Sculpt your chest like never before with the Chest Expander. Overhead downward pulls, lateral raises, military presses, and more will provide your chest, back, and shoulders with a workout that delivers results. It delivers results without having to invest in expensive, bulky equipment. Need to modify the intensity of your workouts? You can easily vary the number of Lifeline cables used. and the flexible, space-saving handles make it easy to work out when you're away from home.