For creative work during the 9-16 hour phase after waking, use high-ceiling rooms or outdoor spaces; for detailed analytic work, use lower-ceiling environments.

“If you want to do creative work during phase two, the nine to 16 hours of your circadian cycle, nine to 16 hours after waking that is, that you do that in the high ceiling room, or maybe even outdoors out on a deck or on a patio. Cause the highest ceiling of courses is the sky. Whereas if you're going to do detailed analytic work I would suggest doing that during phase one of the day. But even if you're going to do it during phase two of the day, for whatever reason, scheduling or other sorts of constraints that you do that in the lower ceiling environment.”

“In contrast, if you're interested in doing brainstorming, creative work, you're writing new things, you're creating new things of any kind, artwork, consider getting into a high ceiling or no ceiling environment.”