Michael Arnott, of Cambridge, Mass., says he used to have trouble staying awake on long drives. Sleep specialists discovered he has obstructive sleep apnea, though not for the most common reasons — he isn't overweight, and doesn't smoke or take sedatives. M. Scott Brauer for NPR hide caption

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M. Scott Brauer for NPR

Snooze Alert: A Sleep Disorder May Be Harming Your Body And Brain

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People in a crowd flee as an out-of-control monster truck plows through spectators at a Mexican air show in the city of Chihuahua Saturday. Officials say they are investigating the incident, in which eight people died. AP hide caption

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