Whether you are menstruating, susceptible to migraines or have twinges of pain in your back, the best TENS machine to use at home can be incredibly effective at relieving pain in a natural way.

TENS machines are not exactly a brand-new invention ... offers and more. For the best stories in your inbox, click here.

A semi-decent TENS machine can cost somewhere between $70 and $200, but the team here have reduced the cost tremendously simply by separating the futzing analog/contact pad part from the signal ...