[xeromal]

As a motorcycle rider, it's always very noticeable. The stale air from the helmet coupled with the shit shit air from outside makes me very sleepy and you can develop a sore throat in a few hours

[Ey7NFZ3P0nzAe]

You might want to lookup hypercapnia clinical signs to look for. Lile sweating, increase heart rate etc. (Source: resident)