There’s a certain irony in checking your hume band recovery score on a morning when you already know, before you’ve even looked at the data, that last night wasn’t great. I went to bed late, woke up relatively early to meet a friend for coffee at nine, and skipped the scales entirely — which means today’s article arrives without a weigh-in for the first time in the experiment. Annoying, but honest. That’s rather the point of all this.
The Data (What There Is of It)
Let’s deal with the gaps first. No Eufy weigh-in this morning — I simply forgot in the rush to get out. The most recent figure on record is 99.95 kg, recorded yesterday morning on 9 April. That remains the working number until tomorrow.
Sleep was short. I won’t dress it up. A late night followed by an early alarm for a social commitment is the kind of thing that happens in real life, and one of the reasons this experiment tracks a full month rather than a curated highlight reel. The CPAP went on, but the session was brief. The breathing device history chart — which has been one of the more quietly compelling data threads of this series — shows a clear dip for last night after the remarkable upward arc of the previous week.
For context, the night of 8 April was genuinely exceptional: 8 hours 19 minutes of CPAP usage, a perfect score of 100, an AHI of just 2.1 events per hour, and a good mask seal throughout. The chart shows usage climbing from under an hour on Day 1 to a consistent six-to-eight-hour range across Days 4 through 8. Last night interrupted that pattern, but one short night does not unravel a trend.
| Metric | Value | Source |
|---|---|---|
| Weight | No reading | — |
| Last recorded weight | 99.95 kg | Eufy (09/04) |
| Body fat % | 30.2% | Eufy (09/04) |
| Lean body mass | 69.90 kg | Eufy (09/04) |
| Visceral fat | 15 (High) | Eufy (09/04) |
| HRV | 79.6 ms | Hume Band |
| Stress level | 18.5 | Hume Band |
| SpO₂ | 95–98% | Hume Band |
| Recovery | 72 | Hume Band |
| Strain | 4 | Hume Band |
| Metabolic Capacity | 57 | Hume Band |
| Steps | Rest day | — |
What the Recovery Score Actually Means
The Hume Band is currently showing a recovery score of 72 — which sits in what the app considers a reasonable range, if not an exceptional one. Strain is at 4, which reflects the rest day accurately. Metabolic Capacity comes in at 57, with the slightly deflating note that a “baseline not found” message still appears — the device is still calibrating to me after ten days, which is worth flagging.
HRV at 79.6 ms is the more interesting number. Heart rate variability is widely regarded as one of the better proxy measures of autonomic nervous system recovery, and mine has been edging upward over the course of the experiment. That’s genuinely encouraging, and it suggests that the lifestyle changes — earlier bedtimes in general, reduced alcohol, intermittent fasting, and improved CPAP compliance — are having a measurable physiological effect even when individual nights go sideways.
Stress at 18.5 is low, which feels accurate. A morning coffee with a friend, no gym, no cycling, no agenda. Sometimes the data just reflects the day you had.
The Knees
My knees remain tight, and I’m not pushing them. This is the second consecutive rest day, and the right call. The long-term goal here isn’t a heroic ten-day fitness montage — it’s sustainable, progressive change over thirty days and beyond. Forcing a training session on compromised joints to satisfy a step count would be the kind of short-term thinking this experiment is specifically designed to expose.
Looking Ahead
Tomorrow involves meeting friends, which will almost certainly mean a more indulgent food day than the norm. That’s fine. One heavier day in the context of a consistent dietary approach — 16:8 intermittent fasting, reduced alcohol, increased hydration — is not a derailment. It’s just a Saturday.
What I’ll be watching is whether the sleep arc recovers tonight. One short night is a blip. Two in a row starts to show up in the HRV data. The CPAP history chart has been one of the most unexpectedly compelling threads of this series, and I’d like to protect that upward curve.
No Hume technical team response yet, either — though I’m still watching for it. When it arrives, it’ll be published in full.
Day 10 of 30. All device readings logged as captured. Eufy body composition data from 9 April used in absence of this morning’s weigh-in.
