Your last 90 daysoverview
Sleep7h02 avg▲ 18 min
Readiness72stable
Three months of wearable, sleep & recovery data.
Overnight HRV vs. caffeine timingscatter
Lower overnight HRV clusters on caffeine-after-2pm days.
Hypothesisdraft
If → then
No caffeine after 2pm → higher overnight HRV
testablen-of-1~2 weeks
A claim about you — not a population average.
Experiment designn-of-1
ProtocolRandomized · 14 nights
MeasureOvernight HRV
Control forworkouts · alcohol
testcontrol
Days assigned at random — so order & expectation can't fake the result.
Running · day 9 / 14logging
Logging every night, controlling for confounders.
Resultsignificant
+11%
overnight HRV
on test nights
Overnight HRV +11% on test nights — consistent, not noise.