When we were taught how to do CPT for Emily it would take us about 15 min. per side and we were told to do it twice a day, more often when she was sick. We were given a rubber cup-like thing to hold to make it easier on our hands and easier to target the specific areas of her body we were trying to get. We were to get upper and lower areas of chest, sides, and upper and lower back, all for about 3min each. We distracted her with TV or reading to her while we did it... I will say that she hated it and we only did it until we were able to get the Vest. The Vest has been SO much better.