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i actually use an electrostim unit for training called the ARPWave POV (http://www.arpwave.com) through EVOUltrafit (http://www.evoultrafit.com) and it helps you recover but not in the way you would use the marc pro. so it took me a while to figure out what kind and how to use an electrostim unit for recovery. however it is probably out of your price range if you think the marc pro is expensive.