The Addaday BioPad EMS C is a cord-free electrical muscle stimulation device that can help train muscles and relieve tightness. Addaday’s BioPad is clinically proven to be an effective, drug-free way to loosen tight muscles and promote circulation. Simply peel off the backing and stick the pad to the affected area to start relieving your weary body. The lightweight device is easy to stash around your house, and it will automatically turn off after 20 minutes of use.