Update: COVID-19 vs. Heat & Humidity

Over the summer we published this blog post discussing existing research on heat and humidity in relation to COVID-19. (Hint: it was good news for Bikram Yogis!)

A new study came out this month which has even more to say on the subject. Where back in May, scientists observed that areas with higher temps and humidity experienced less spread of COVID, the recent findings suggest it's not quite that simple.

Wait... can we still do Bikram Yoga??

YES.

**CAVEAT ALERT**

Before I dive in any deeper, I'd like to point out that in no way am I claiming that being in our yoga room will guarantee that you do not catch the novel coronavirus. The truth is that any time you leave your home or are around other people, you are at some risk of catching COVID. This post is addressing the scientific findings that some environments pose more risk than others. 

Here is what the science says:

​"Our research shows that the viability of coronavirus is higher at low air temperature values below or equal to 75 F (25°C) and at high relative humidity values greater than or equal to 65%," says Prof. Dimitris Drikakis, one of the new study's authors.

"Therefore, countries with the above weather conditions or indoor places with the above environmental conditions (at those conditions) are more at risk."

Check out this chart (circle added for reference) from the study showing the concentration of airborne contaminated droplets:

The study found there was less risk of catching COVID at temperatures above 75 and humidity below 65%.

Hooray: that's US! (See the red circle on the image above.)

​We keep our hot room at a perfectly sweet spot for sweating: 105 degrees Fahrenheit (40 Celsius) with 40-60% humidity (In most classes, especially now with our limited capacity, humidity actually remains between 40-50%.)

Scientists now understand that how well COVID spreads in the air is due to a combination of factors which include not only heat and humidity but also (when outdoors) wind and (when indoors) ventilation.

For indoor spaces, proper ventilation is advised, as well as the use of air purification systems to help reduce concentration levels of any contagions in the air.

Here at Home we've always been fans of good air quality.

Yogis who've practiced in stuffier hot studios often remark at how much better they breathe in our room! That's in part because of our Demand Control Ventilation system. 

The DCV maintains indoor air quality by automatically adjusting the amount of outside air coming into the hot room when the CO2 reaches a specific level.

In order to further increase the flow of outside air in keeping with current recommendations, this setting is currently at “0” which means we are bringing in the maximum amount of outside air (around 50%) during class. The air which is recycled is constantly cleaned by the iWave air purification system.

"We should also avoid places of low temperature," says Drikakis.

We've been saying that for years! ;)

​Check out this post for a rundown of the many benefits of heat for all kinds of reasons. And read this if you have any concerns about "handling" the heat. Most importantly, join us in Home's hot room: we're here 7 days a week.

​Click here to book your class!