Tens placement is a user decision. The recommended location of left ankle / right wrist is a general starting point to target the entire body. Makes sense as the electricity has to flow from one end to the other, thus providing coverage across as much of the body as possible.
It has already been stated in many locations including the user guide that if you have a known targeted area to address, that the best placement is to bi-sect the area in question.
For example, if you are targeting your spleen, place the TENS pads on the front and back of the torso where the spleen is located. This focuses the path of electricity to go through the area you are intending to target.
With areas above the neck, it is also stated not to use the TENS pads directly as the head is a very bad place to send electricity through. There is also the matter of resonating the area around the carotid arteries. While rare, it is possible to lock the muscles if you do something incorrectly and constrict the blood flow to your brain.
Not a great situation to be in. Therefore, when targeting areas of the head, use the areas of the shoulders for pad placement. As this gets the electricity closest to the area to be targeted safely.
Please check Tens Pads Placement from:
Authored by: Jeff Kaczor