From my personal experience, nothing scientific or proven here.
I sit in a small office since last few years. A year or so ago I started to get less mentally active, as in things were going on in automatic mode.
And I did not feel good in general, a friend who practices Yoga advised me to do breathing exercises.
15-30 mins of deep breaths in open space in early morning, after shower, before breakfast. Followed by 3-5 min of rapid breathing. And finishing with taking as much air as I can and holding it for 30 sec to a min and repeating it for 2-3 times.
I do feel active after that, I wonder if it's related to these studies.
Did you check the co2 levels on your office? that could be one reason.
You really just paste these 2 lines in your html and that's it:
it's a bit more than 100kb of js, but for prototyping it is very nice.I wish more UI libraries where in the same style. You can always optimize the bundle later.