Uploaded July 2026 | Updated September 2026, 2 weeks ago
If you’re a coffee drinker and find yourself tired and wired at the end of the day, you may need to have your last cup much earlier than you think, says Dr. Trisha Pasricha, a physician at Beth Israel Deaconess Medical Center, an assistant professor of medicine at Harvard Medical School and The Washington Post’s Ask a Doctor columnist.
Your last cup, researchers have found, needs to be about nine hours before you sleep.
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If you’re a coffee drinker and find yourself tired and wired at the end of the day, you may need to have your last cup much earlier than you think, says Dr. Trisha Pasricha, a physician at Beth Israel Deaconess Medical Center, an assistant professor of medicine at Harvard Medical School and The Washington Post’s Ask a Doctor columnist.
Your last cup, researchers have found, needs to be about nine hours before you sleep.
Subscribe to The Washington Post on YouTube: https://wapo.st/2QOdcqK
Follow us:
X: https://x.com/washingtonpost
Instagram: instagram.com/washingtonpost
Facebook: facebook.com/washingtonpost
Threads: threads.com/@washingtonpost
Bluesky: https://bsky.app/profile/washingtonpost.com
