Stressful boredom?

I find it amusing that sometimes absolute boredom, aka the absolute lack of having anything to do, can be just as stressful as a complete overwhelming load of work, aka the absolute abundance of having things to do.

I do remember my prof's in Cog Sci saying that the healthiest mental activity level for the mind/brain is to have a moderate amount of stress periodically - much like how nutrionists suggest eating small meals throughout the day.

Maybe that's why I enjoy bouldering so much. It's all short spurts of moderate physical / mental stress punctuated by long durations resting, thinking and socializing.

I think tomorrow I'm going to cogitate on the traffic laws of Alabama instead of these moderately deep thoughts which are punctuated by periods of utter boredom.