Why It Works
The electrode pads are usually placed near the source of the pain. Your TENS unit sends a very small electric current through the skin. This stimulates the sensory nerves, which carry touch and temperature signals. These nerves go to the same connections in the spine as the nerves carrying pain. A strong sensory signal will replace the pain signal travelling up the spine to the brain. This is known as the "pain Gate".In the pain Gate mode TENS provides relief while it is switched on. The tingling/pins and needles sensation that you experience competes with the painful signals.
TENS can be used several times a day.At low Pulse Rate settings, TENS causes a release of endorphins, the body's natural morphine like substances, which relaxes and relieves your pain.In Endorphin Release mode, the relief builds up over as much as 40 minutes, and can last for up to 4 hours after the unit is turned off.