THIS ARTICLE IS republished from The Conversation under a Creative Commons license.
You’re in the middle of the afternoon, eyelids heavy, focus slipping. You close your eyes for half an hour and wake up feeling recharged. But later that night, you’re tossing and turning in bed, wondering why you can’t drift off. That midday snooze which felt so refreshing at the time might be the reason.
Naps have long been praised as a tool for boosting alertness, enhancing mood, strengthening memory, and improving productivity. Yet for some, they can sabotage nighttime sleep.
Napping is a double-edged sword. Done right, it’s