TENS therapy devices are very common home physical therapy devices. Below, I'll explain their working principles, main functions, and key considerations for purchasing and using them. Working Principle and Main FunctionsTENS stands for “transcutaneous electrical nerve stimulation.” Its core principle is to apply low-frequency pulses of electrical current at a specific frequency and intensity to the nerves on the surface of the skin.It primarily relieves discomfort based on two theories: Pain gate control theory: Electrical stimulation can “shut off” the transmission of pain signals to the brain, much like other senses (such as touch) taking up the “pathway” for pain transmission. Endorphin release theory: Electrical stimulation stimulates the body to release endorphins, natural analgesics that help raise the pain threshold and relieve pain.In addition to the core TENS function, many devices also integrate EMS (electrical muscle stimulation). EMS isn't primarily used for pain relief; rather, it uses electrical stimulation to induce muscle contractions, thereby maintaining muscle mass, promoting blood circulation, and assisting with muscle training and rehabilitation. Main Application ScenariosTENS therapy devices are primarily used to relieve acute and chronic musculoskeletal pain. For example: Relieves discomfort associated with neck, shoulder, back, and leg pain, soft tissue sprains and contusions, and frozen shoulder. Also relieves postoperative pain, joint pain, and some chronic, intractable pain. Helps inhibit muscle atrophy caused by prolonged inactivity, surgery, or injury, and promotes nerve recovery.Type Features Suitable for:Portable Mini: Compact and highly portable, suitable for office workers or everyday users who need on-the-go pain relief.To ensure safety, please note the following before use: Electrode placement: Avoid application to the eyes, throat, heart area, or near the carotid sinus. Avoid areas with wounds, infections, or skin inflammation. Caution for use in special populations: Pregnant women and those with pacemakers or other implanted electronic medical devices are strictly prohibited. First-time users: It is recommended to start with the lowest intensity and gradually increase the intensity to allow the body to adapt. If you feel any discomfort during use, stop immediately.What’s in the box
1 x Muscle Meridian Body Massager
1 x Manual