Why you wake up tired, even after eight hours
Sleep inertia is the grogginess that hits when an alarm pulls you out of deep sleep. Here is what causes it, how long it lasts, and what actually reduces it.
GUIDES
Sleep guides
Plain-language explanations of what actually governs how you feel in the morning: which stage of sleep you get woken from, why snoozing backfires, and how a smart alarm picks its moment.
How to stop hitting snooze
Hitting snooze gives you fragmented sleep that is not restorative, and often makes grogginess worse. Here is why it backfires and what works instead.
How smart alarms work
A smart alarm watches for a lighter stage of sleep inside a window you choose, instead of firing at one fixed minute. Here is how that works and what it can and cannot do.
Drifty is a general wellness product. It does not diagnose, treat, cure, or prevent any disease or condition, and it is not a substitute for professional medical advice. If you have concerns about your sleep or breathing, talk to a qualified healthcare provider.