Are you substituting any caffeine? I've been cycling through month-long periods exclusive to coffee, yerba mate, and non-caffeinated herbals. Sometimes others.

When I cycle back to coffee, I find myself reverting to a maladaptive redlining and recovery rhythm. I suspect this has carved a compulsion for the work-hard-party-hard glow so prevalent in my younger years.

This pattern doesn't hold at all, for me, with mate or oolongs.