Remove your mask outdoors to prevent heatstroke [Ministry of the Environment and Ministry of Health, Labor and Welfare]

Thursday, July 2, 2020

The Ministry of Health, Labour and Welfare's website lists key points for preventing heatstroke under the "new lifestyle." Among these points is a section on "wearing masks," which we will introduce below.

Wearing a mask can be physically demanding

Masks are effective in preventing the spread of droplets, and we ask that everyone wear one as a basic infection prevention measure even under the "new lifestyle." However, wearing a mask can put a strain on the body, increasing heart rate, breathing rate, blood carbon dioxide concentration, and perceived temperature compared to when not wearing a mask.

When outdoors and you can maintain a sufficient distance from others, remove your mask.

Therefore, wearing a mask in a hot and humid environment may increase the risk of heatstroke, so if you are outdoors and can maintain a sufficient distance (at least 2m) from others, remove your mask.

When wearing a mask, avoid strenuous work or exercise.

If you wear a mask, avoid strenuous work or exercise, and make sure to drink plenty of fluids even if you are not thirsty. It is also important to temporarily remove your mask and take a break in a place where you can maintain a sufficient distance from others.

When going out, avoid hot days and times and try to wear cool clothing.