Transcutaneous electrical nerve stimulation (TENS) is a therapy that uses low-voltage electrical currents to relieve pain. It involves placing adhesive pads on the skin, which deliver electrical impulses to the underlying nerves. This stimulation can help reduce the perception of pain and may promote the release of endorphins, the body's natural painkillers. TENS is commonly used for various conditions, including chronic pain, arthritis, and muscle injuries. It is considered a non-invasive and drug-free option for pain management. While many people find it effective, results can vary, and it is advisable to consult a healthcare professional before starting TENS therapy.