There are a variety of reasons why someone might not be breathing, ranging from spinal damage, to being trapped underneath something heavy which is stopping the chest rising.

BBC: Minutes matter

He was photographed wading chest high in muddy flood waters when heavy rains brought landslides and chaos to Miranda in 2010.

BBC: Capriles in Caracas, 7 April 2013

He stole the ball from Lawson, stopped in heavy traffic and dropped in a 27-footer before sprinting all the way to the bench high-fiving and chest-bumping teammates.

NPR: Curry Leads Warriors Past Denver 115-101 In Game 4