A There is generally no pain during the TruSculpt Flex treatment. You will feel the stimulation of the muscles being treated, but it is not necessary to be in pain to obtain great results. Most clients have no pain during the treatment or post treatment. To get the best results it is important to follow the pre & post treatment guidelines, such as no exercise 24-48 hours prior to and post treatment. Working on tired muscles will not get you the best results.