The solution to chronic pain begins with a HiDow unit. TENS, which stands for Transcutaneous Electrical Nerve Stimulation, is a therapy that's been utilized for many years to address pain conditions related to the nerves and muscles. As a result, it stimulates the production of endorphins which is the body's natural painkillers. You don't have to be in pain to reap the benefits of our technology. In fact, sports enthusiasts and athletes use them for post-workouts. With a TENS/EMS device, you can simultaneously relax and recover. With HiDow, you can ditch the costly, bulky machines. We designed our massagers to be low in profile so you can wear it underneath your clothing.