Hypoxia training shows why you put your mask on first

It is the go-to demonstration of how hypoxia silently disables decision making, cited in threads on altitude, flying, diving, CO2 and breathwork.

Destin Sandlin of Smarter Every Day undergoes hypoxia training and experiences his own impaired thinking as oxygen is withdrawn. The video shows how quickly and unnoticeably oxygen deprivation degrades judgment, illustrating why you put your own mask on first.