I’m breathing in my own carbon dioxide. It builds up in the body and affects the muscles... You have to overcome all of that while you’re doing it, and be present.

There were times I would pass out physically; I was unable to get back into the cockpit," Cruise says.Is there anything Tom Cruise won't do while filming the Mission: Impossible movies?The action star has made it clear that he'll try anything to get the stunts right in his long-running franchise.

Tom Cruise’s dedication to practical stunts reaches new depths in Mission: Impossible – The Final Reckoning, with Empire magazine revealing the actor risked hypoxia while filming an intense underwater sequence.