Get back in the game more quickly without the worry of stiff muscles. Sharper Image Powerboost Deep Tissue Percussion Massager is the post-workout recovery tool you need and the muscle repairer you deserve. This state-of-the-art massage gun uses percussion to target sore muscles and tight knots, helping you unwind after a long workout. Change the strength of the percussion to one of the 6 built-in speed settings to suit your bodys needs and help break up lactic acid before your next workout. The nodes loosen tight or stiff muscles to reduce soreness and get you back in the game quicker. The massager is whisper quiet with low vibration on the ergonomic handle, so its the most comfortable massage gun youll find anywhere. Take it with you to the gym, on vacation, or to your next game.