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On whether changes in bedroom CO2 levels affect sleep quality

gwern.net

131–140 of 322 posts

Re: On whether changes in bedroom CO2 levels affect sleep quality

#131
This has all the markings of a pseudoscientific fad.

1. Abundance of flimsy anecdotal evidence

2. Mostly subjective measures of outcome (I feel smarter and refreshed!)

3. Seemingly plausible, but totally unverified scientific reasoning

I'm not holding my breath yet.

Re: On whether changes in bedroom CO2 levels affect sleep quality

#133

Self experiments like these are a great re-enforcement of how insanely hard it is to do accurate, reproducible science. This submission tells us absolutely nothing due to the lack of rigor applied. SO many potential confounding variables, there is zero value in what is being done here.

whatevs. I never saw the guy make grandiose claims about what he was doing, and if the results generalize to no one besides his future selves, so what?certainly useful to him and better than some half assed anecdotal justification.

and most science is absolutely buried in possible confounds. sheez

Re: On whether changes in bedroom CO2 levels affect sleep quality

#134
post #29

I was lucky to get my hands on 5 proper co2 sensors from university, while I was teaching and working. So plenty of test places. What I found: -Just a couple of hours in a office, without ventilation spikes the co2 enough to make everyone dizzy and tired by the end of the day. Keeping eye on the meter and ventilating properly, increased everyones productivity and people werent so tired by the end of the day. - Classr…

Wow. Didn't realize how important it was to aerate. I seldom open the windows at my place.

I also remember often getting really dizzy working in my previous office, and I couldn't understand why, maybe you're on to something.

Now I'm wondering how all of that has affected my health along the years

Re: On whether changes in bedroom CO2 levels affect sleep quality

#135

Self experiments like these are a great re-enforcement of how insanely hard it is to do accurate, reproducible science. This submission tells us absolutely nothing due to the lack of rigor applied. SO many potential confounding variables, there is zero value in what is being done here.

whatevs. I never saw the guy make grandiose claims about what he was doing, and if the results generalize to no one besides his future selves, so what?certainly useful to him and better than some half assed anecdotal justification. and most science is absolutely buried in possible confounds. sheez

So what? So it's actively misleading and draws people to unsubstantiated claims such as what are being flooded in this comment section is what.

Re: On whether changes in bedroom CO2 levels affect sleep quality

#136
post #29

I was lucky to get my hands on 5 proper co2 sensors from university, while I was teaching and working. So plenty of test places. What I found: -Just a couple of hours in a office, without ventilation spikes the co2 enough to make everyone dizzy and tired by the end of the day. Keeping eye on the meter and ventilating properly, increased everyones productivity and people werent so tired by the end of the day. - Classr…

As someone who has built my fair share of houses and worked on many more over the last 25 years, I have to agree that our ability to seal air better than ever is causing problems, especially if you don't have forced air heating and cooling running all the time. People just completely ignore or haven't ever thought about room ventilation, positive or negative room pressures, and where and how to ventilate to the outsi…

And I recently remember hearing forced air is bad for air quality inside! Did I hear wrong or is there something more to the story like “forced air brings in outside air, so if your outside air is bad you’ll have trouble”?

Re: On whether changes in bedroom CO2 levels affect sleep quality

#137
post #103

Earlier quoted context omitted.

413ppm is now ambient. Goes up higher every year (with a small amount of seasonal variation). By 2100, we may be at 800ppm if we continue and/or accelerate fossil burning (4 degrees C trajectory). https://www.co2.earth/2100-projections Already a middling stuffy room, and would increase indoor levels 400ppm over today.

I wonder at what point will people have active systems to lower their CO2 below ambient in their homes.

You mean plants?

Re: On whether changes in bedroom CO2 levels affect sleep quality

#138
Couple of months ago I changed jobs and have moved to a new city with my family. Due to unusual working hours I keep separate bed in my tiny office (10 square meters or roughly 100 square feet).

As soon as I have moved I have started having trouble with my work which I initially assumed was due to me being overworked and tired with the entire hoopla around the change.

Only after about 3 months I have finally figured out to keep the room door open at night to allow the air to circulate. It immediately helped. My office in my previous flat was not tight and the air always flowed even when the doors were closed. The new one is completely sealed when the doors are closed.

Re: On whether changes in bedroom CO2 levels affect sleep quality

#139

Earlier quoted context omitted.

Until you get to below zero.

They now (as of 2018 I think) make Extra Low Temp heat pumps, which can work down to -15F. I think that makes heat pumps practical for a very wide variety of temperate climates.

I see they do, but their BTU's are very low - I see the Fujitsu RLS3H, which goes down to -26C only outputs 12,000 BTU at that temperature. To heat a house at that temperature you'd need 5-10 (if not more) of those.

Re: On whether changes in bedroom CO2 levels affect sleep quality

#140
post #29

I was lucky to get my hands on 5 proper co2 sensors from university, while I was teaching and working. So plenty of test places. What I found: -Just a couple of hours in a office, without ventilation spikes the co2 enough to make everyone dizzy and tired by the end of the day. Keeping eye on the meter and ventilating properly, increased everyones productivity and people werent so tired by the end of the day. - Classr…

Can you suggest a commercial CO2 sensor that you think is accurate enough? Most of the ones available on Amazon.com seem to be quite amateurish.
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