The air you breathe in your office can have major impacts on your performance — so we tested ours

Hollis Johnson

Some modern workplaces have gotten so efficiently air-tight and crowded that they could be making us less productive. 

That's partly our colleagues' fault: Adults breathe out a continuous (yet tiny) stream of CO2, which adds up to around 2 pounds every day. 

On the ground outside, carbon dioxide concentrations typically hover between 250 and 500 parts per million, depending on how much pollution is around. Indoors, CO2 concentrations can be a bit higher, though it varies from place to place.

But extra CO2 can have a measurable effect on how well people accomplish cognitively high-level tasks at work.

A recent study by researchers from Harvard, SUNY and Syracuse suggests that when people breathe in too much carbon dioxide at their desks, their performance suffers. That jives with what brain researchers know about carbon dioxide: more CO2 causes brain metabolism to plummet and neural activity to take a dive. 

That study got the science team at Business Insider wondering how much CO2 is in the air we're breathing at work. So we conducted a test in our office to determine whether we, too, are being impacted by elevated carbon dioxide levels.

In the study, 24 workers spent six days working at different CO2 concentrations. The participants were plucked from a range of professions, including engineers, marketers and programmers. The results from the small group suggested that even a slightly elevated CO2 level can have an impact on how well people work.

K2 Space/flickr

The researchers tested the participants with a range of decision-making tests at the end of each day.

On some days, workers went about their business in rooms where CO2 was circulating at 550 parts per million. On others, the concentration hovered at 945 ppm, and on the rest, they subjected participants to a high-carbon dioxide condition, at 1400 ppm. (The Centers for Disease Control generally considers places with CO2 levels above 1200 ppm 'inadequately ventilated.')

Study participants working under the heaviest concentration of CO2 performed 50% worse on cognitive tasks than they did in the low 550 ppm scenario. And when the workers were working in rooms with the medium CO2 concentrations (945 ppm), their cognitive test scores were 15% lower.

In other words, the researchers found that a little extra CO2 can make you act a lot dumber.

Indoor carbon dioxide became a problem in the 1970s, when designers began making buildings more airtight. People started reporting feeling ill and less productive at work. The term 'sick building syndrome' was born.

Aubrey Hart / Getty

Exposure to higher-than-average levels of carbon dioxide, concentrations upwards of 2%, can leave exposed individuals feeling faint, breathless, and dizzy.

In more serious cases, taking in too much carbon dioxide can put people in a coma or kill them.

Ultimately, designers and architects adopted new building ventilation standards to make sure that there's enough fresh air indoors.

Hollis Johnson

We were desperate to know how our office fared. 

See the rest of the story at Business Insider