Since we've begun using the Aranets to keep the CO2 low, I definitely notice a difference in concentration and energy.
This has morphed into feeling a real craving to go for walks and get fresh air. I'm now basically one of those cheerful 19th century mothers who respond to everything with, "Did you open a window about it?"
Or, "Have you taken a walk about it?"
@hollie How interesting! And I love reading about how tuned into your body and the immediate environment you’ve become. I’ll want to pull out our Aranet CO2 reader now… Plus I bought a similar Temtop one that measures very small particles too (eg virus). The Aranet we have uses batteries and had no on/off switch. The Temtop one is rechargeable