Following up on my previous post: #866881

This is a good read, summarising of the crucial role of CO2 in breathing, and overall health.

PS: if you haven't already, please take the bolt test and submit your result here: #866881 Mine this morning was terrible! 26 seconds, which is not surprising, considering that I worked until very late yesterday, went to bed after 1am, and slept for less than 6 hours. 😔