Jessica Ramirez

Jessica Ramirez

Inclusive Innovation from the LBC

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Forums

The 90-Minute Rule: Do sleep cycles actually work for you, or is human biology too messy

I've been reading a lot about sleep inertia lately that brutal, heavy grogginess that hits when your alarm goes off while you're still in deep sleep. The popular theory says our sleep runs in roughly 90-minute cycles, and that waking at the end of one can leave us feeling more refreshed. But human biology isn't always that neat. Stress, age, caffeine, late-night screen time, and countless other variables can easily shift those patterns.

I'm curious how the makers and builders here approach sleep. Do you actually optimize around sleep cycles, or do you focus more on getting a consistent 7 8 hours and calling it good? Have you found any routines, habits, or simple tracking methods that genuinely reduce morning grogginess? I'd love to hear what has worked for you and whether the sleep-cycle idea holds up in real life.

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