“It may be dangerous to exercise while wearing a face mask, according to an exercise and physiology expert”
“...When we do heavy exercise, our muscles produce lactic acid, which causes that burning sensation. It is then converted to carbon dioxide and exhaled. But what happens if the carbon dioxide is trapped by the mask? As you move from moderate to heavy exercise, you may be re-breathing carbon dioxide, which can reduce cognitive function and increase breathing rate.
There may also be less oxygen in the recycled air, which could imitate exercising at higher altitudes. So it is important we gain a better understanding of the limitations of heavy exercise with a face mask.
The need for this understanding is growing, given the story reported on an Australian News Channel of two teenage boys in China dying within a week of each other during compulsory physical education examinations while wearing face masks. Autopsies have not been performed, so it’s impossible to know whether the masks played a role in the boys’ deaths. But it raises the question, is it safe to exercise with a face mask on during COVID-19?”
Interesting.
AFAIK only covid disrupts the body’s awareness of oxygen deprivation.
So, these kids already had advanced covid infection?