The purpose of inserting these needles into the tight muscle groups is to reduce pain and improve mobility. Often, a cause and source of pain or poor mobility are from muscles compensating for an injury at another part of the body. By inserting the IMS needles into the trigger points (IMS Needling), the patient feels a deep ache or twitching sensation as the needle moves through the tight muscles. The process is repeated over and over again at different trigger points. Although you might be sore the next day, IMS needling “resets” and relaxes the muscles, improving mobility and function. At no point during the process should you be in any pain or severe discomfort.