How TENS Works:

1. Pain Gate Theory: One theory suggests that electrical pulses prevent pain signals from reaching the brain, thus “closing the gate” to these signals.
2. Endorphin Release: Another theory suggests that electrical stimulation helps the body produce endorphins, which are natural painkillers.

Uses:

1. Chronic Pain: Conditions like arthritis, fibromyalgia, lower back pain, and tendinitis.
2. Acute Pain: Such as labor pain, sports injuries, or post-surgical pain.
3. Muscle Stimulation: To prevent muscle atrophy in cases of immobility.

Features:

1. Electrodes: Sticky pads that attach directly to the skin.
2. Adjustable Intensity: 15 Levels Most TENS machines allow users to adjust the intensity of the electrical current.
3. Frequency: Some devices let you adjust the frequency of the electrical pulse.
4. Modes: Different modes may deliver pulses in bursts, waves, or steady stream, e.g TENS modes, EMS mode and massage mode.
5. Channels: Two independent channels.