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Summary for run
📔 Journal
Mentioned 18 days · avg mood 3.4/5 · last 2d ago
Your body across 18 matching days with Garmin data
Body Battery high → low90 → 38
Sleep7.2h
Stress39
HRV65 ms
Resting HR53 bpm
Steps10,374
SpO₂96%
Respiration14 br/min
Deep sleep1.4h
Light sleep3.8h
REM sleep1.6h
Awake0.4h
Backward test Forward test

Two ways to test a hunch: a backward test analyses the history you already have, and a forward test (an experiment) watches it play out from today. Same question, same stats — two lenses.

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Timeline

18 matching days
Sat 22 Aug Journal · 3/5 7.5h 68 ms 51 bpm 81 → 42 8,743 43 96% 14 br/min 1.5h 3.8h 1.6h 0.5hdetails

Matched run in this day's entry.

Body Battery high → low81 → 42
Sleep7.5h
Stress43
HRV68 ms
Resting HR51 bpm
Steps8,743
SpO₂96%
Respiration14 br/min
Deep sleep1.5h
Light sleep3.8h
REM sleep1.6h
Awake0.5h
Fri 21 Aug Journal · 2/5 7.1h 70 ms 52 bpm 90 → 45 8,076 42 96% 14 br/min 1.6h 3.5h 1.6h 0.4hdetails

Matched run in this day's entry.

Body Battery high → low90 → 45
Sleep7.1h
Stress42
HRV70 ms
Resting HR52 bpm
Steps8,076
SpO₂96%
Respiration14 br/min
Deep sleep1.6h
Light sleep3.5h
REM sleep1.6h
Awake0.4h
Thu 20 Aug Journal · 4/5 6.4h 72 ms 51 bpm 92 → 28 11,910 34 96% 14 br/min 1.1h 3.4h 1.5h 0.3hdetails

Matched run in this day's entry.

Body Battery high → low92 → 28
Sleep6.4h
Stress34
HRV72 ms
Resting HR51 bpm
Steps11,910
SpO₂96%
Respiration14 br/min
Deep sleep1.1h
Light sleep3.4h
REM sleep1.5h
Awake0.3h
Mon 17 Aug Journal · 2/5 6.8h 72 ms 50 bpm 96 → 35 13,229 35 96% 14 br/min 1.4h 3.4h 1.6h 0.5hdetails

Matched run in this day's entry.

Body Battery high → low96 → 35
Sleep6.8h
Stress35
HRV72 ms
Resting HR50 bpm
Steps13,229
SpO₂96%
Respiration14 br/min
Deep sleep1.4h
Light sleep3.4h
REM sleep1.6h
Awake0.5h
Sun 16 Aug Journal · 4/5 7.2h 70 ms 50 bpm 88 → 33 13,896 33 96% 14 br/min 1.4h 3.8h 1.5h 0.5hdetails

Matched run in this day's entry.

Body Battery high → low88 → 33
Sleep7.2h
Stress33
HRV70 ms
Resting HR50 bpm
Steps13,896
SpO₂96%
Respiration14 br/min
Deep sleep1.4h
Light sleep3.8h
REM sleep1.5h
Awake0.5h
Thu 13 Aug Journal · 4/5 7.2h 72 ms 52 bpm 94 → 46 8,863 43 96% 14 br/min 1.5h 3.7h 1.6h 0.5hdetails

Matched run in this day's entry.

Body Battery high → low94 → 46
Sleep7.2h
Stress43
HRV72 ms
Resting HR52 bpm
Steps8,863
SpO₂96%
Respiration14 br/min
Deep sleep1.5h
Light sleep3.7h
REM sleep1.6h
Awake0.5h
Tue 11 Aug Journal 6.2h 66 ms 53 bpm 84 → 26 12,029 41 96% 14 br/min 1.1h 3.6h 1.2h 0.3hdetails

Matched run in this day's entry.

Body Battery high → low84 → 26
Sleep6.2h
Stress41
HRV66 ms
Resting HR53 bpm
Steps12,029
SpO₂96%
Respiration14 br/min
Deep sleep1.1h
Light sleep3.6h
REM sleep1.2h
Awake0.3h
Sat 8 Aug Journal · 5/5 6.8h 65 ms 51 bpm 90 → 34 12,105 33 96% 14 br/min 1.4h 3.6h 1.4h 0.4hdetails

Matched run in this day's entry.

Body Battery high → low90 → 34
Sleep6.8h
Stress33
HRV65 ms
Resting HR51 bpm
Steps12,105
SpO₂96%
Respiration14 br/min
Deep sleep1.4h
Light sleep3.6h
REM sleep1.4h
Awake0.4h
Tue 4 Aug Journal · 3/5 7.4h 65 ms 53 bpm 88 → 44 7,472 44 96% 14 br/min 1.5h 3.9h 1.6h 0.3hdetails

Matched run in this day's entry.

Body Battery high → low88 → 44
Sleep7.4h
Stress44
HRV65 ms
Resting HR53 bpm
Steps7,472
SpO₂96%
Respiration14 br/min
Deep sleep1.5h
Light sleep3.9h
REM sleep1.6h
Awake0.3h
Fri 31 Jul Journal · 5/5 7.1h 63 ms 51 bpm 83 → 28 13,348 33 96% 14 br/min 1.3h 3.8h 1.7h 0.4hdetails

Matched run in this day's entry.

Body Battery high → low83 → 28
Sleep7.1h
Stress33
HRV63 ms
Resting HR51 bpm
Steps13,348
SpO₂96%
Respiration14 br/min
Deep sleep1.3h
Light sleep3.8h
REM sleep1.7h
Awake0.4h
Sat 25 Jul Journal 7.6h 70 ms 52 bpm 95 → 33 11,362 34 96% 14 br/min 1.7h 3.9h 1.6h 0.5hdetails

Matched run in this day's entry.

Body Battery high → low95 → 33
Sleep7.6h
Stress34
HRV70 ms
Resting HR52 bpm
Steps11,362
SpO₂96%
Respiration14 br/min
Deep sleep1.7h
Light sleep3.9h
REM sleep1.6h
Awake0.5h
Tue 21 Jul Journal · 1/5 7.5h 68 ms 52 bpm 91 → 34 14,029 36 96% 13 br/min 1.7h 3.8h 1.6h 0.5hdetails

Matched run in this day's entry.

Body Battery high → low91 → 34
Sleep7.5h
Stress36
HRV68 ms
Resting HR52 bpm
Steps14,029
SpO₂96%
Respiration13 br/min
Deep sleep1.7h
Light sleep3.8h
REM sleep1.6h
Awake0.5h
Tue 14 Jul Journal · 4/5 7.5h 62 ms 53 bpm 99 → 48 9,275 41 96% 14 br/min 1.6h 3.7h 1.7h 0.4hdetails

Matched run in this day's entry.

Body Battery high → low99 → 48
Sleep7.5h
Stress41
HRV62 ms
Resting HR53 bpm
Steps9,275
SpO₂96%
Respiration14 br/min
Deep sleep1.6h
Light sleep3.7h
REM sleep1.7h
Awake0.4h
Wed 8 Jul Journal · 3/5 6.9h 64 ms 54 bpm 86 → 42 7,424 45 96% 14 br/min 1.5h 3.4h 1.7h 0.4hdetails

Matched run in this day's entry.

Body Battery high → low86 → 42
Sleep6.9h
Stress45
HRV64 ms
Resting HR54 bpm
Steps7,424
SpO₂96%
Respiration14 br/min
Deep sleep1.5h
Light sleep3.4h
REM sleep1.7h
Awake0.4h
Tue 30 Jun Journal · 3/5 8.0h 57 ms 54 bpm 90 → 45 7,611 43 96% 14 br/min 1.5h 4.3h 1.6h 0.6hdetails

Matched run in this day's entry.

Body Battery high → low90 → 45
Sleep8.0h
Stress43
HRV57 ms
Resting HR54 bpm
Steps7,611
SpO₂96%
Respiration14 br/min
Deep sleep1.5h
Light sleep4.3h
REM sleep1.6h
Awake0.6h
Sat 20 Jun Journal · 3/5 7.5h 62 ms 56 bpm 86 → 21 12,898 36 96% 14 br/min 1.3h 4.1h 1.8h 0.3hdetails

Matched run in this day's entry.

Body Battery high → low86 → 21
Sleep7.5h
Stress36
HRV62 ms
Resting HR56 bpm
Steps12,898
SpO₂96%
Respiration14 br/min
Deep sleep1.3h
Light sleep4.1h
REM sleep1.8h
Awake0.3h
Wed 10 Jun Journal · 3/5 7.8h 59 ms 57 bpm 93 → 51 7,373 41 96% 14 br/min 1.5h 4.4h 1.8h 0.2hdetails

Matched run in this day's entry.

Body Battery high → low93 → 51
Sleep7.8h
Stress41
HRV59 ms
Resting HR57 bpm
Steps7,373
SpO₂96%
Respiration14 br/min
Deep sleep1.5h
Light sleep4.4h
REM sleep1.8h
Awake0.2h
Thu 28 May Journal · 5/5 6.9h 53 ms 57 bpm 92 → 52 7,087 42 96% 14 br/min 1.5h 3.5h 1.6h 0.3hdetails

Matched run in this day's entry.

Body Battery high → low92 → 52
Sleep6.9h
Stress42
HRV53 ms
Resting HR57 bpm
Steps7,087
SpO₂96%
Respiration14 br/min
Deep sleep1.5h
Light sleep3.5h
REM sleep1.6h
Awake0.3h
Biometrics on the days you mentioned run
18 days you mentioned it in the last 365 · Garmin data on 90 of 365 days
Window: 90d 180d 365d  ·  Effect: same day night after
💓 Resting HR −1.7bpm same day (n=18 — likely a real pattern)
❤️ HRV +2.5ms same day (n=18 — weak hint)
Deeper analysis — significance, timelines, dose-response & more
💓 Resting HR
−1.7bpm
52.8 vs 54.5bpm
n=18 / 72
likely a real pattern
Resting HR (bpm)
baseline   Resting HR days
❤️ HRV
+2.5ms
65.4 vs 62.9ms
n=18 / 72
weak hint
HRV (ms)
baseline   HRV days
🛌 Sleep
+0.2h
7.2 vs 7h
n=18 / 72
within your normal variation
Sleep (h)
baseline   Sleep days
😖 Stress
+0.8
38.8 vs 38.1
n=18 / 72
within your normal variation
Stress
baseline   Stress days
💓 Resting HRavg 54 bpm · latest 51 bpm
49.5952.0154.4356.8559.27May 27Jun 18Jul 10Aug 1Aug 24
On your mention days: 53 bpm · −2 vs baseline
Hide graph
💓 Resting HR over time — orange = your mention days
When does it land? — Sleep Stress HRV Resting HR
The lighter bars are your baseline average (54.5bpm ± 2 sd). Days from a day you mentioned it (0 = the day itself); where the Resting HR bar clears baseline is where the effect lands.
📔 Mood on the days you mentioned it
Mood coupling — does your mood track Resting HR on these days? (r=0.07, n=16)1234549.5951.3853.1754.9556.74Resting HR (bpm)Mood
Each dot is a mention day: that day's Resting HR vs the mood you logged.
Rhythm — when do these days fall? (longest run 3 days · typically every ~4 days)
Cohort days by weekday. A lopsided strip means the effect might be a weekday pattern — the stats above already switch to a weekday-matched baseline when that happens.
Exercise — do you train differently on these days?
You worked out on 33% of these days vs 12% otherwise — you train more often than usual. Average 14.8 min vs 5.7 min per day.
From your Garmin activities — a possible confound for the biometric changes above.
Notable days — the most unusual cohort days, worth re-reading
2026-08-20 ↗ ❤️ HRV +8.7ms (1.3 sd from normal)
2026-08-16 ↗ 💓 Resting HR −4.5bpm (1.3 sd from normal)
2026-07-25 ↗ 😖 Stress −4.6 (1.1 sd from normal)
Opens that day in your journal — the numbers point you there; the words stay in your vault.
How this is computed
Your cohort is the days you mentioned run. Each metric's average on those days is compared with every other day in the window that has Garmin data (your baseline). The significance chip comes from a permutation test — 1,000 random reshuffles of which days are cohort days; a pattern is flagged only when the real difference beats most reshuffles (and you have at least 8 cohort days). "The night after" shifts the comparison to the following day. When your cohort clusters on certain weekdays, the baseline is restricted to those weekdays.
Correlations from your own logs — not causation. Mentioning or taking something once is easily noise at small n. Garmin daily rollups only; your journal prose never leaves your vault.
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