Could you get a charley horse in your calf from the impulses?

The REVITIVE will cause your muscles to contract and relax. If you are prone to muscle cramping then it is recommended to decrease the intensity and time on the REVITIVE for the first week from 30 to 20 minutes. This will help prevent any muscle cramping. Hydration is key to healthy muscles and a glass of water will begin to help prevent any types of cramping pains.