Health news and features Atrial fibrillation: Not always an older person’s condition Treating sleep apnea Diagnosing a sleep disorder Bad vibrations: Why some people snore Who needs sleep? You do New research links light at night to poor health What to do about daytime drowsiness Bleary-eyed? How to get better ZZZs Insomnia: When sleep is a struggle How to stop snoring The scary world of nightmares and night terrors