Hmm, okay. I was considering trying it on its own, rather than while doing something else. I know I wasn't able to do autogenics exercises while trying to do something else before, and now I sort of can after having practiced, so I would expect it to go poorly to try to go the other direction for the first time while otherwise occupied.
After you mentioned this I realized I have all the parts on hand to make a DIY galvanic skin response sensor. I got the hardware set up, and now I'm working on getting the software set up in a nice way. Hopefully it will work out :-)
Thus spake Eliezer:
It seems that many here might have outlandish ideas for ways of improving our lives. For instance, a recent post advocated installing really bright lights as a way to boost alertness and productivity. We should not adopt such hacks into our dogma until we're pretty sure they work; however, one way of knowing whether a crazy idea works is to try implementing it, and you may have more ideas than you're planning to implement.
So: please post all such lifehack ideas! Even if you haven't tried them, even if they seem unlikely to work. Post them separately, unless some other way would be more appropriate. If you've tried some idea and it hasn't worked, it would be useful to post that too.