This is O2 assisted apnea as explained in https://en.wikipedia.org/wiki/Static_apnea#With_pure_oxygen_%E2%80%93_record_progression https://en.wikipedia.org/wiki

This is O2 assisted apnea as explained in https://en.wikipedia.org/wiki/Static_apnea#With_pure_oxygen_%E2%80%93_record_progression https://en.wikipedia.org/wiki/Static_apnea#With_pure_oxygen_...