sleep inertia

Why Your Hour-Long Naps Leave You Groggy: What Sleep Specialists Know About the Perfect Nap Duration

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Why Your Hour-Long Naps Leave You Groggy: What Sleep Specialists Know About the Perfect Nap Duration

For years, longer afternoon naps seemed logical—more sleep should mean more rest. But a sleep specialist’s explanation revealed a counterintuitive truth: napping for 60-90 minutes often leaves you groggy because you’re waking up during deep sleep. The solution lies in understanding sleep cycles and choosing the right duration.

Why Your Long Lunch Nap Makes You Groggier: The Science Behind Sleep Inertia and the 20-Minute Solution

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Why Your Long Lunch Nap Makes You Groggier: The Science Behind Sleep Inertia and the 20-Minute Solution

You wake up from a 90-minute nap feeling like you’ve been hit by a truck, not refreshed. A sleep specialist explains the surprising biology behind afternoon grogginess and reveals the exact nap length that actually works—plus the one timing mistake that sabotages your entire evening.