(CNN) — You fall asleep at an appropriate hour, giving yourself enough time to rest before a big day ahead — only to be jolted awake by racing thoughts: Was your friend secretly offended by your joke?

You fall asleep at an appropriate hour, giving yourself enough time to rest before a big day ahead — only to be jolted awake by racing thoughts: Was your friend secretly offended by your joke? Are ...

A new study provides evidence that a person’s innate vulnerability to stress-induced sleep problems can intensify how much a racing mind disrupts their sleep over time. While daily stress affects ...