Oh, and another thought: Have you considered trying to use this to learn to go in the opposite direction, i.e., increase your excitement? It might be useful to be able to do both!
OK, I tried this a couple times today, with disappointing results. I was trying to use it to help me focus on a video lecture I was watching, but I found it pretty hard to maintain any sustained increase in my level of activation... even when I got it to spike temporarily, it would immediately start going down. Also, the fact that it read data from my fingers meant I couldn't use that hand to create spaced repetition cards. Overall, it served as way more of a distraction than an asset, and I don't think I noticed any focus benefits immediately afterward...
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.