The secret is in its breakthrough technology. A powerful and highly efficient dual contact muscle stimulation system that achieves amazing results. But the Gymform Duo's revolutionary system sends a continuous positive and negative resistance to the muscles, to create reciprocating contractions. That's double the power.Double efficiency.Double effectiveness.And double fast results. Just attach the Gymform Duo and press a button. It will automaticall make your muscles contract and relax over 100 times per minute. Giving you maximum results for your abs, Pecs, Back, Arms, and Legs. It's perfect for working the most difficult zones like the back of the arms and the inner thighs. And perfect for eliminating unsightly cellulite. With the Gymform Duo, you can choose from 6 different programs: giving you a nice variety of muscle toning and massaging functions. Each program has up to 10 intensity levels, so you can adjust your workout to your individual fitness... Whether you're a beginner, an intermediate user, or at an advanced level. It's so handy you can use it whenever you like... While watching TV, Reading a book, or working at the computer. Its compact size, so you can wear it under your clothes and no one will notice.