The latest addition to the list of things you grew up doing that is now killing children left and right: underwater breath-holding contests.
Whether as horseplay or part of swim training, "dangerous underwater breath-holding behaviors" can lead to otherwise strong, healthy swimmers losing consciousness underwater and drowning, warns a new report from the U.S. Centers for Disease Control and Prevention.
Breath-holding contests are a common cause of this type of drowning, health officials said in the CDC's May 22 issue of the Morbidity and Mortality Weekly Report. Swimmers submerge and try to hold their breath for as long as possible, usually remaining motionless.
Next up for government warnings: getting mad and holding your breath until you turn blue. We're inordinately lucky to have crack researchers - paid with tax dollars - to study these important issues.