How does caffeine affect my sleep?

Caffeine affects our sleep in that it increases the level of adrenaline, and blocks sleep-inducing chemicals that help us fall and stay asleep. Watch internist and sleep expert Carol Ash, DO, explain how caffeine can negatively affect our sleep.

You probably knew about the effects of having caffeine late in the day. But what about these other causes of sleeplessness?

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Constant caffeine, skipped workouts and other perils of the late-night worker.