My Hell Zone is more of a Zombie Mode. I'm plugging along pretty good until I wake up one morning and I just can't do it anymore. So I cancel home school for the day and stay in bed and binge Netflix. We eat cereal for dinner.

By the time I wake up the next morning, I'm not usually cured of Zombie Mode completely, but I've recharged enough that I can keep functioning fairly normally. And since it only happens about once a month, I don't feel terribly guilty about it.

Glad to know it's not just me.