I’ve noticed how easy it would be to let this whole polyphasic life become one large day. I feel like I only ever take a break from what I’m doing to nap. I don’t wrap anything up to go to bed. So to keep track of days, I made these sheets. Every time I nap, I check off that box (applies to adaptation week only) and then if I’ve just completed a 3 o’clock nap, I’ll change my “dry erase fireplace” to the next day or night. I’m finding that even more important to one’s circadian rhythm than knowing the right day is feeling the right day. Eating meals that correspond to the right time of day, and letting the sun soak in the skin during daylight hours is profoundly helpful for my internal clock. Otherwise, it’s dark and I ate a sandwich.... is it 8:15pm on Monday or 6:30am on Tuesday? It really can be hard to tell.