I tracked my sleep for 365 days - here is what actually improved it
Anonymous
6 months ago
Data nerd here. I wore an Oura Ring for a full year and tracked everything: bedtime, wake time, caffeine cutoff, alcohol, exercise timing, room temperature, mattress type, pillow changes, and supplements. Here are my top findings ranked by impact on deep sleep: 1) Room temperature at 65-67F (+23% deep sleep), 2) No caffeine after 12pm (+18%), 3) Consistent bedtime within 30 min window (+15%), 4) 20 min walk after dinner (+12%), 5) Switching from memory foam to hybrid mattress (+10%), 6) Magnesium glycinate before bed (+8%). The single biggest waste of money? A $300 weighted blanket that made zero measurable difference for me.
3 Replies
This is incredible data! The caffeine cutoff at 12pm matches my experience exactly. I used to have a 3pm coffee and could not figure out why I was tossing and turning. Caffeine has a 6-hour half-life so even at midnight you still have 25% of that 3pm coffee in your system. Also agree on the weighted blanket - total waste for me too.
Surprised that the hybrid mattress switch was only +10%. Did you control for the mattress age? If you went from an old memory foam to a new hybrid, part of that improvement might just be a new mattress effect. Would love to see data on whether the improvement held after a few months on the hybrid.
The room temperature finding is backed by peer-reviewed research. Dr. Matthew Walker recommends 65F (18.3C) as optimal. Your data showing 65-67F as the sweet spot matches the science perfectly. One thing I would add: humidity matters too. I run a dehumidifier in summer and it improved my deep sleep significantly. Aim for 30-50% relative humidity.
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