Anyone on site USED any of the devices available these days?
There are small devices which measure skin temp and give off a signal if/when we achieve some particular temperature in our fingers, where contact is made between our fingers and the device(s). Others have a headband with the same kind of idea, there are even computer programs and some have GAMES which, if we can reduce our heart rate, breathing, etc. allow us to play said game(s) at a particular level(s) apparently…
Anybody familiar with these devices, these tools? Most seem very expensive, and I have no clue if one or another is or is not worth the price? Anybody have opinion, know anybody who might???
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