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The DoubleFlex total body gym is an all-in-one strengthening and toning device that works muscles like free weights do, but with less stress on joints—and with less bulk. The slim design is lightweight and portable, so it’s a great way to squeeze in a workout while you’re traveling or if you can’t get to the gym. An instructional DVD and fitness guide helps you get started with tips and routines, too. The resistance comes from SpiraFlex band technology created by Paul Francis, the inventor of the Bowflex. He scaled down (and lightened up) the system for NASA astronauts to stay in shape while they’re on the space station. It proved to be so effective that he made the DoubleFlex portable trainer for the rest of us here on Earth.
Whether you’re just beginning or looking to mix up your usual workout routine, Paul’s innovative approach will give you the right amount of resistance.
 the system for NASA astronauts to stay in shape while they’re on the space station. It proved to be so effective that he made the DoubleFlex portable trainer for the rest of us here on Earth. Whether you’re just beginning or looking to mix up your usual workout routine, Paul’s innovative approach will give you the right amount of resistance.)
