3 ms·

Thanks for the clarification. I was thinking of it as closer to holding one's breath/atmosphere leaving. I hadn't thought of it simply being an increase in C02

Thanks for the clarification. I was thinking of it as closer to holding one's breath/atmosphere leaving. I hadn't thought of it simply being an increase in C02 concentration.

Doxin 9y ago
It's not an increase in CO2 concentration. It's a decrease in O2 concentration. Humans can't actually sense low O2 levels, but instead only high CO2 levels.