Possible Clues:

• Nap disturbed — one has regularly suffered this?
• Sleep problem, to Brits
• Brief halt in breathing
• Happen to be sad, every so often, where one temporarily stops breathing
• Drunk open in teetotallers association describes one who is not breathing
• Cessation of breathing during sleep
• Asphyxia, cessation of breathing
• Sleeper's breathing problem, to a Brit
• Issue of sleeping adults involving open chops
• See 23