Use the Lifeline Chest Expander to add progressive variable weighted resistance to your upper body strengthening programs.
Strengthen your upper body; open chest and shoulders with continual resistance since you can remove any of the included bands in order to start from light to medium, to heavy and very heavy resistance.

Resistance training uses resistance or force to induce muscular contraction, which builds strength and anaerobic endurance. Resistance exercises also help you increase bone density, improve metabolism and decrease your risk of injury.