Cracking open the window AND the door as you sleep: reduces CO2 back to healthy levels. Ensures you can sleep, don't wake up gasping for air, no headaches in the morning, deeper, more restful sleep. Less need for sleep. 10/10
https://twitter.com/nosilverv/status/1292008708596269056?s=20…
Yes and I attribute this to 30% of my unreasonably high energy levels
Use an Awair monitor to measure CO2 and more, and the difference an open window makes is profound
Bedroom window is open if at all possible: ice on the outside or inside of the glass is a bonus. Hot room = little to no sleep. My part 2 ruins your poll