Run a 30-day experiment on yourself with Oura tags

Why n-of-1 beats the headline

“Alcohol hurts sleep” is true on average and useless in particular — it doesn’t tell you whether two glasses of wine cost you 20 minutes of deep sleep or barely register. An experiment on yourself replaces the population average with your personal effect size, which is the only number you can act on.

Pick one variable at a time

The classic mistake is changing everything at once. Choose a single factor to track — alcohol, caffeine after noon, a late meal, a hard workout, a stressful day — and tag the nights it happens. Keep everything else as normal as you can. One clean variable produces a readable result; five tangled ones produce noise.

Tag honestly for 30 days

You need enough “yes” and “no” nights to compare. Roughly two weeks of each, spread across a month, is a reasonable floor. Tag in the moment so you don’t forget, and resist the urge to tag aspirationally — the experiment only works if the data is honest, including the nights you’d rather not record.

Read the difference, not the night

After a month, compare your average HRV, resting heart rate and deep sleep on tagged nights versus untagged ones. The single night is noise; the difference between the two groups is the signal. A consistent 6 ms HRV drop on alcohol nights is a finding. A one-off bad night proves nothing.

Then change one thing

The point of the experiment is a decision: keep the habit, drop it, or move it earlier. You don’t need to overhaul your life — you need the one or two levers that genuinely move your numbers, and the confidence that comes from having measured them on yourself.

Vitra runs this analysis for you. Tag your nights and it compares each factor against your own baseline, surfaces the ones with a real, repeated effect on your recovery, and tells you the size of the effect in plain English — the monthly read of what actually moves your needle.

Frequently asked questions