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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 → low89 → 36
Sleep7.0h
Stress39
HRV66 ms
Resting HR53 bpm
Steps10,441
SpO₂96%
Respiration14 br/min
Deep sleep1.4h
Light sleep3.7h
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 7.2h 68 ms 51 bpm 84 → 41 8,468 41 96% 14 br/min 1.4h 3.9h 1.6h 0.3hdetails

Matched run in this day's entry.

Body Battery high → low84 → 41
Sleep7.2h
Stress41
HRV68 ms
Resting HR51 bpm
Steps8,468
SpO₂96%
Respiration14 br/min
Deep sleep1.4h
Light sleep3.9h
REM sleep1.6h
Awake0.3h
Fri 21 Aug Journal · 3/5 6.7h 71 ms 53 bpm 91 → 42 7,668 44 96% 14 br/min 1.4h 3.5h 1.6h 0.2hdetails

Matched run in this day's entry.

Body Battery high → low91 → 42
Sleep6.7h
Stress44
HRV71 ms
Resting HR53 bpm
Steps7,668
SpO₂96%
Respiration14 br/min
Deep sleep1.4h
Light sleep3.5h
REM sleep1.6h
Awake0.2h
Thu 20 Aug Journal · 3/5 7.9h 73 ms 54 bpm 93 → 45 7,001 41 96% 14 br/min 1.8h 3.6h 2.0h 0.5hdetails

Matched run in this day's entry.

Body Battery high → low93 → 45
Sleep7.9h
Stress41
HRV73 ms
Resting HR54 bpm
Steps7,001
SpO₂96%
Respiration14 br/min
Deep sleep1.8h
Light sleep3.6h
REM sleep2.0h
Awake0.5h
Mon 17 Aug Journal · 3/5 6.6h 69 ms 50 bpm 93 → 26 11,453 39 96% 14 br/min 1.2h 3.3h 1.6h 0.5hdetails

Matched run in this day's entry.

Body Battery high → low93 → 26
Sleep6.6h
Stress39
HRV69 ms
Resting HR50 bpm
Steps11,453
SpO₂96%
Respiration14 br/min
Deep sleep1.2h
Light sleep3.3h
REM sleep1.6h
Awake0.5h
Sun 16 Aug Journal 7.0h 66 ms 49 bpm 83 → 29 12,119 39 96% 14 br/min 1.2h 3.6h 1.6h 0.6hdetails

Matched run in this day's entry.

Body Battery high → low83 → 29
Sleep7.0h
Stress39
HRV66 ms
Resting HR49 bpm
Steps12,119
SpO₂96%
Respiration14 br/min
Deep sleep1.2h
Light sleep3.6h
REM sleep1.6h
Awake0.6h
Thu 13 Aug Journal · 5/5 6.8h 68 ms 52 bpm 88 → 44 7,086 41 96% 14 br/min 1.3h 3.4h 1.6h 0.5hdetails

Matched run in this day's entry.

Body Battery high → low88 → 44
Sleep6.8h
Stress41
HRV68 ms
Resting HR52 bpm
Steps7,086
SpO₂96%
Respiration14 br/min
Deep sleep1.3h
Light sleep3.4h
REM sleep1.6h
Awake0.5h
Mon 10 Aug Journal · 2/5 8.0h 70 ms 53 bpm 95 → 48 9,086 42 96% 14 br/min 1.6h 4.4h 1.6h 0.4hdetails

Matched run in this day's entry.

Body Battery high → low95 → 48
Sleep8.0h
Stress42
HRV70 ms
Resting HR53 bpm
Steps9,086
SpO₂96%
Respiration14 br/min
Deep sleep1.6h
Light sleep4.4h
REM sleep1.6h
Awake0.4h
Sat 8 Aug Journal · 5/5 7.5h 68 ms 54 bpm 90 → 42 9,028 38 96% 14 br/min 1.4h 3.8h 1.8h 0.5hdetails

Matched run in this day's entry.

Body Battery high → low90 → 42
Sleep7.5h
Stress38
HRV68 ms
Resting HR54 bpm
Steps9,028
SpO₂96%
Respiration14 br/min
Deep sleep1.4h
Light sleep3.8h
REM sleep1.8h
Awake0.5h
Mon 3 Aug Journal · 4/5 6.9h 69 ms 50 bpm 97 → 29 12,995 33 96% 14 br/min 1.4h 3.7h 1.4h 0.4hdetails

Matched run in this day's entry.

Body Battery high → low97 → 29
Sleep6.9h
Stress33
HRV69 ms
Resting HR50 bpm
Steps12,995
SpO₂96%
Respiration14 br/min
Deep sleep1.4h
Light sleep3.7h
REM sleep1.4h
Awake0.4h
Thu 30 Jul Journal · 2/5 6.6h 64 ms 53 bpm 98 → 53 8,404 41 96% 14 br/min 1.1h 3.7h 1.3h 0.4hdetails

Matched run in this day's entry.

Body Battery high → low98 → 53
Sleep6.6h
Stress41
HRV64 ms
Resting HR53 bpm
Steps8,404
SpO₂96%
Respiration14 br/min
Deep sleep1.1h
Light sleep3.7h
REM sleep1.3h
Awake0.4h
Sat 25 Jul Journal · 5/5 7.3h 67 ms 52 bpm 92 → 33 12,162 34 96% 15 br/min 1.5h 3.7h 1.7h 0.4hdetails

Matched run in this day's entry.

Body Battery high → low92 → 33
Sleep7.3h
Stress34
HRV67 ms
Resting HR52 bpm
Steps12,162
SpO₂96%
Respiration15 br/min
Deep sleep1.5h
Light sleep3.7h
REM sleep1.7h
Awake0.4h
Mon 20 Jul Journal · 2/5 6.5h 65 ms 53 bpm 83 → 39 8,196 43 96% 14 br/min 1.2h 3.4h 1.4h 0.5hdetails

Matched run in this day's entry.

Body Battery high → low83 → 39
Sleep6.5h
Stress43
HRV65 ms
Resting HR53 bpm
Steps8,196
SpO₂96%
Respiration14 br/min
Deep sleep1.2h
Light sleep3.4h
REM sleep1.4h
Awake0.5h
Tue 14 Jul Journal · 3/5 6.5h 61 ms 52 bpm 90 → 29 13,544 36 96% 14 br/min 1.5h 3.4h 1.4h 0.3hdetails

Matched run in this day's entry.

Body Battery high → low90 → 29
Sleep6.5h
Stress36
HRV61 ms
Resting HR52 bpm
Steps13,544
SpO₂96%
Respiration14 br/min
Deep sleep1.5h
Light sleep3.4h
REM sleep1.4h
Awake0.3h
Wed 8 Jul Journal 6.6h 63 ms 55 bpm 91 → 51 8,924 43 96% 14 br/min 1.4h 3.1h 1.4h 0.6hdetails

Matched run in this day's entry.

Body Battery high → low91 → 51
Sleep6.6h
Stress43
HRV63 ms
Resting HR55 bpm
Steps8,924
SpO₂96%
Respiration14 br/min
Deep sleep1.4h
Light sleep3.1h
REM sleep1.4h
Awake0.6h
Tue 30 Jun Journal · 2/5 6.7h 65 ms 52 bpm 84 → 28 13,626 36 96% 14 br/min 1.2h 3.8h 1.4h 0.3hdetails

Matched run in this day's entry.

Body Battery high → low84 → 28
Sleep6.7h
Stress36
HRV65 ms
Resting HR52 bpm
Steps13,626
SpO₂96%
Respiration14 br/min
Deep sleep1.2h
Light sleep3.8h
REM sleep1.4h
Awake0.3h
Sun 21 Jun Journal · 5/5 6.8h 61 ms 55 bpm 91 → 31 12,279 39 96% 15 br/min 1.4h 3.2h 1.6h 0.6hdetails

Matched run in this day's entry.

Body Battery high → low91 → 31
Sleep6.8h
Stress39
HRV61 ms
Resting HR55 bpm
Steps12,279
SpO₂96%
Respiration15 br/min
Deep sleep1.4h
Light sleep3.2h
REM sleep1.6h
Awake0.6h
Tue 9 Jun Journal · 4/5 7.5h 61 ms 54 bpm 82 → 23 12,475 38 96% 14 br/min 1.6h 4.0h 1.6h 0.3hdetails

Matched run in this day's entry.

Body Battery high → low82 → 23
Sleep7.5h
Stress38
HRV61 ms
Resting HR54 bpm
Steps12,475
SpO₂96%
Respiration14 br/min
Deep sleep1.6h
Light sleep4.0h
REM sleep1.6h
Awake0.3h
Wed 27 May Journal · 3/5 7.6h 54 ms 55 bpm 84 → 24 13,421 39 96% 13 br/min 1.3h 4.3h 1.6h 0.3hdetails

Matched run in this day's entry.

Body Battery high → low84 → 24
Sleep7.6h
Stress39
HRV54 ms
Resting HR55 bpm
Steps13,421
SpO₂96%
Respiration13 br/min
Deep sleep1.3h
Light sleep4.3h
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 +2.6ms same day (n=18 — weak hint)
Deeper analysis — significance, timelines, dose-response & more
💓 Resting HR
−1.7bpm
52.7 vs 54.4bpm
n=18 / 72
likely a real pattern
Resting HR (bpm)
baseline   Resting HR days
❤️ HRV
+2.6ms
65.6 vs 63ms
n=18 / 72
weak hint
HRV (ms)
baseline   HRV days
😖 Stress
+0.7
39.2 vs 38.5
n=18 / 72
within your normal variation
Stress
baseline   Stress days
1 metric unchanged on these days: Sleep.
🛌 Sleepavg 7 h · latest 6.1 h
6.126.587.057.527.98May 27Jun 18Jul 10Aug 1Aug 24
On your mention days: 7 h · about the same as baseline
Hide graph
🛌 Sleep over time — orange = your mention days
When does it land? — Sleep Stress HRV Resting HR
The lighter bars are your baseline average (7h ± 0.5 sd). Days from a day you mentioned it (0 = the day itself); where the Sleep bar clears baseline is where the effect lands. Sleep at +1 = the night after the mention day.
📔 Mood on the days you mentioned it
Mood coupling — does your mood track Sleep on these days? (r=0.13, n=15)123456.486.857.227.597.96Sleep (h)Mood
Each dot is a mention day: that day's Sleep vs the mood you logged.
Rhythm — when do these days fall? (longest run 3 days · typically every ~5 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 28% of these days vs 14% otherwise — you train more often than usual. Average 12.3 min vs 6.3 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
2026-08-03 ↗ 💓 Resting HR −4.1bpm (1.2 sd from normal)
2026-08-10 ↗ 🛌 Sleep +0.9h (1.1 sd from normal)
2026-08-20 ↗ 🛌 Sleep +0.9h (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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