"The treatment begins on a low setting and the intensity is gradually increased according to the patient’s tolerance," says Expert. "Most patients reach 100-percent intensity in their first session." In between intensity increments there is a resting phase: "During this mode, the machine flushes lactic acid from the muscles so you get all the gain without the pain," says Expert. As soon as the half-hour is complete, you are out the door: no down time, no redness, no swelling — really nothing but stronger muscles fibers in record time.