Tried the TENS machine. Awesome. Two AA batteries whack out enough of a jolt to make your muscles twitch uncontrollably. Think of sticking a PP3 battery on your tongue, except over an arm or leg. The sensation is not unlike a sneeze, and exactly like touching a cattle fence.The TENS theory is that the shock encourages the body to produce endorphins, which mask the pain for the mother. In practice, especially if you set it to turbo boost (yes, except cars, everything has a turbo version), the TENS shocks raise the total sensory input so high that the body's receptors simply shut down.
Why does the heading Tasers in Childbirth spring to mind? Pic is from the excellent site, http://www.tbotech.com/advancedtaser.htm, where I discover that the Taser, too, is powered by AA batteries...
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