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Runs/2026-07-15.md

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+---
+date: 2026-07-15
+type: run
+tags: [run, afternoon, long-run, óbuda]
+---
+
+# Run — 2026-07-15
+
+**5.02 km in 35:55 — Second 5K ever. Afternoon run, slower pace but held it together for the full distance.**
+
+## Data
+
+| Metric | Value |
+|--------|-------|
+| Distance | **5.02 km** |
+| Duration | **35:55** |
+| Avg pace | 7'09" |
+| Fastest pace | **6'01"** |
+| Avg HR | 155 bpm |
+| Max HR | 178 bpm |
+| Cadence | 156 spm |
+| Max Cadence | 176 spm |
+| Steps | 5,603 |
+
+| Metric | Value |
+|--------|-------|
+| HR recovery (2min) | 21 bpm (174→131) |
+| VO₂Max | **41 ml/kg/min** ✅ held |
+| Training load | 79 (Low) |
+| Recovery time | 17h |
+| GCT | 307 ms (Good) · Min 268 ms |
+| Balance | L 50.0% / R 50.0% (perfect) |
+| Vertical oscillation | 9.1 cm (Avg) / 10.3 cm (Max) |
+| Stride | 94 cm |
+| Speed | 8.39 km/h |
+| Elevation | +6.5m / −8.0m |
+| Route | Óbuda side |
+
+**HR zone distribution:** Extreme (Z5) ~3 min · Anaerobic (Z4) <1 min · Threshold · Aerobic (Z3) · Fat-burning ~5 min · Warm-up
+
+## Sleep — Night before
+
+**5h 52min** (watch) + **~50min post-wake nap** → ~6h 42min total · 01:36→07:50 · REM: 19% · Deep: 23% · HRV: **93ms** · Resting HR: 54 · Score: 72/100
+
+> Short night — only 5h 52min, below the 6-10h reference range. Light sleep dominated at 58% (above the 55% reference — sign of restless/compensatory light sleep). Woke 2 times. HRV at 93ms is within range (78-132) but well below your sober baseline (110-135ms) — comparable to your ~2-drink nights. Deep sleep 23% is technically normal but that's only 1h 21min of actual deep sleep on such a short night. You napped ~50min after waking, bringing total sleep to ~6h 42min — still below your ideal. Breathing quality held at 98, SpO₂ 98%.
+
+## How it felt
+
+> Really wasn't feeling it today. Hard day mentally — lot of clutter in my head. At the end of the workday I decided to just go for a run, see if it would clear things out. Ate 2 muesli bars beforehand and made my sports drink (30g sugar + pinch of salt in water).
+>
+> The heat was killing me though. Afternoon sun + summer temps made it a slog. Combined with the short sleep and mental fatigue, this was pure grind — not a fun run by any stretch. But I finished it. 
+
+## Comparison
+
+| Metric | Jul 5 (PB) | Jul 10 | Jul 12 | Jul 13 | **Jul 15** |
+|--------|-----------|--------|--------|--------|------------|
+| Distance | **5.30 km** 🚀 | 2.50 km | 1.98 km | 2.50 km | **5.02 km** |
+| Duration | 34:29 | 14:52 | 13:13 | 14:40 | **35:55** |
+| Avg pace | 6'30" | 5'57" | 6'41" | **5'52"** | **7'09"** ⬇️ |
+| Fastest pace | 5'23" | 4'46" | 5'45" | **3'53"** 🏆 | **6'01"** |
+| Avg HR | 155 bpm | 151 bpm | 144 bpm | 154 bpm | **155 bpm** |
+| Max HR | 169 bpm | 164 bpm | 155 bpm | **178 bpm** | **178 bpm** |
+| Cadence | 167 spm | 170 spm | 165 spm | **172 spm** | **156 spm** ⬇️ |
+| VO₂Max | 40 | **41** 🆕 | 41 | 41 | **41** ✅ |
+| Sleep (night before) | 8h 11m · HRV 135 | 7h 42m · HRV 94 | 7h 41m · HRV 78 | 6h 47m · HRV 121 | **5h 52m · HRV 93** |
+
+**Verdict:** Second 5K in the books — and you finished it. But the numbers tell a clear story: **same average heart rate (155 bpm) as Jul 5 but 39 seconds slower per km**. That's a significant efficiency drop driven almost entirely by sleep. You ran Jul 5 on 8+ hours of sleep with HRV at 135ms (top of range); today you ran on 5h 52min with HRV at 93ms. The cadence drop (156 vs your usual 165-172) and higher max HR (178, matching your all-time peak) suggest your body was working much harder to produce less output — classic under-recovered physiology. HR recovery was also weaker: 21 bpm vs 25 bpm on Jul 5.
+
+The bright side: **VO₂Max held at 41**, you finished the full 5K without stopping, and you kept perfect 50/50 balance. The afternoon timing (17:52) + summer heat + mental fatigue were a triple headwind — your body is used to morning runs in cooler conditions. This was a grit-finish, not a performance run — and sometimes that's the kind you need. 🏃
+
+## Connected
+
+- [[Sleep/2026-07-15]]
+- [[Runs/2026-07-13]]
+- [[Runs/2026-07-05]]