11/02/2026
You’re not imagining it. That heavy, foggy feeling right after waking has a name: sleep inertia.
It’s a temporary period of grogginess and disorientation as your brain shifts toward full alertness. Shift work can make mornings harder when sleep happens at irregular times or you wake during a deeper stage of sleep.
A study of 519 shift nurses, published October 10, 2026, identified distinct sleep-inertia profiles. Depression and anxiety were prominent in the more severe profiles, while sleep duration, anxiety, and fatigue were associated with profile membership. These findings show associations, not proof that one causes another.
A few gentle supports to try:
• Give yourself a buffer before taking on responsibilities, when possible.
• Get bright light after waking.
• Drink some water and stand or move gently.
Sleep inertia is common. But if grogginess lasts for hours or affects your safety, it’s worth paying attention to and discussing with a qualified healthcare professional. Individual needs and schedules vary.
Kimberly O'Neill is an independent Brand Ambassador for THREE™ International.
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Kimberly O'Neill, MSN-RN
TheNurseKimberly 💃
Educational purposes only. Not medical advice.