Squeeze the blood out of the muscle knots then let in the fresh blood!!  Out with the old in with the new!!!
I use it to squeeze the blood out of my muscle knots about 20 seconds on wait 20 and repeat (out with the old nasty blood in with the fresh new blood!!!).  Helps with painful muscle knots (neck, back etc).  Gel Ice pack might help as well...on until numb (less than 15 mins) wait an hour and repeat.
Rating: 4 stars