I can’t imagine if the whole office was filled with people exercising.
https://www.mouser.com/datasheet/2/682/Sensirion_Gas_Sensors...
https://thinkprogress.org/exclusive-elevated-co2-levels-dire...
> Associations of Cognitive Function Scores with Carbon Dioxide, Ventilation, and Volatile Organic Compound Exposures in Office Workers: A Controlled Exposure Study of Green and Conventional Office Environments
> ... Methods: Twenty-four participants spent 6 full work days (0900–1700 hours) in an environmentally controlled office space, blinded to test conditions. On different days, they were exposed to IEQ conditions representative of Conventional [high concentrations of volatile organic compounds (VOCs)] and Green (low concentrations of VOCs) office buildings in the United States. Additional conditions simulated a Green building with a high outdoor air ventilation rate (labeled Green+) and artificially elevated carbon dioxide (CO2) levels independent of ventilation.
> Results: On average, cognitive scores were 61% higher on the Green building day and 101% higher on the two Green+ building days than on the Conventional building day (p < 0.0001). VOCs and CO2 were independently associated with cognitive scores.
> Conclusions: Cognitive function scores were significantly better under Green+ building conditions than in the Conventional building conditions for all nine functional domains. These findings have wide-ranging implications because this study was designed to reflect conditions that are commonly encountered every day in many indoor environments.
The overall feeling I got was "tired". My eyes didn't want to stay open. My mind felt like gauze was wrapping it. My attitude was mellowed and slightly depressed. It took more effort to move (even to walk to the door outside, which I did often despite it being allergy season). As soon as I spent 10m outside my energy started to return.
Home gyms can cover part of it. You can do a lot with a chinup bar, bodyweight exercises, powerblock dumbell sets.
I'm actually in a city too cold to go without a gym year round, and I do barbells so I can't do those at home (space too small). But, mentioning the options above for those who don't have the same constraints.
Just more pleasant in general as well.
For particulates, the Laseregg is the best I've found.
Apparently the laseregg 2+ measures VOC, but I'm not sure about that. From what I heard there are no VOC meters available at a consumer level. CO2 is the best proxy, because high CO2 means low ventilation, which prevents venting of VOCs.
* I am far more diligent about opening a window at my home and office. In winter I may open one a crack.
* I leave my bedroom door open at night
* I noticed I was getting extremely high AQI index readings when cooking. I was frying things in a pan after previously cooking something else in the same meal (meat, then sweet potatoes). I now wash in between, use coconut oil (less AQI readings) and am more diligent about opening the kitchen door if the AQU gets high
It's kind of like measuring weight. Once you have it stable, you don't really need to do anything. But, keeping the readings alerts you if something ever goes off track.
Also very useful to see that even openings in windows could make large and immediate differences.
It does a decent job.
That wouldn't make much sense: what if you feel ill only after doing certain exercises (e.g. cardio versus weight lifting)?
Gyms are rarely purpose built facilities. Rather, theyre rented and renovated spaces. In turn, airflow in the structure is planned for light industrial or office space. Almost no thought goes into the fact that gyms are sometimes hundreds of occupants moving the air at two to three times what the OSHA or planning documents indicate. Paints with VoC's, sealants, and even offgassing plastics from gym mats or new equipment can turn the air quality from decent to garbage in a few hours.
I was once contracted to fix an air handler issue at a fitness center. The root cause was a set of 6 un-ventilated panini presses that were placed near the front desk as part of an effort to sell snacks and sandwiches. The added smoke and particulate had decreased the filter life and burned out a blower motor. The solution was either get rid of the electric grills, or start replacing 30 day filters every week.