The standard diagnostic technique is to have the patient breathe rapidly for two minutes.

By the last year of his life he could not breathe for more than twenty minutes without needing oxygen.

Then he sat down and began breathing deeply for three minutes, to oxygenate his lungs.

Reeve had not been breathing for three minutes before paramedics arrived.

Waldman suffered severe complications during birth, including not breathing for nearly 21 minutes.

Mr. Huneck almost died, and indeed stopped breathing for more than five minutes at one point.

Breathe deeply through your mouth and nose for five to 10 minutes.

Relax while breathing deeply and evenly for 5-10 minutes.

If the infant fails to breathe on its own for three minutes, it is presumed brain dead.

He can breathe by himself for only 20 minutes at a time.