Health Deep Dive
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Health Deep Dive — Jerry

Age 32 · Male · Jun 10 – Aug 24, 2026 · Xiaomi Mi Band 10 Pro

Headline Numbers vs age-32 baseline

Resting Heart Rate
43 bpm
30-day avg · range 41–48
Age-32 elite
Nightly HRV (median)
104 ms
30-day avg · base band 64–114
Well above avg
Sleep Efficiency
94.5 %
avg of valid nights
Good
Blood Oxygen (SpO₂)
97 %
nightly avg · 96–98
Normal
Daily Steps
9,177 steps
real full-day avg (76 d) · median 9,116 · 30d 9,458
Healthy
Activity Energy
392 kcal/d
avg across active days
High
Zone 2 Cardio
150 min/wk
avg over last 12 wks · peak week 305 min
Above guideline
Gym Volume
~31 sets/wk
~4,050 kg/wk tonnage · ~1.4 sessions/wk
Solid

Physiological Age vs chronological 32

Estimated from nightly HRV (Lifelines Cohort, N=84,772), resting heart rate, and a VO₂max estimate from resting HR + waist (HUNT/NTNU-CERG, sex-adjusted). Wrist-PPG is conservatively discounted.
Cardiovascular / Autonomic
~22–25
years
≈ 7–10 yrs younger than birth age
Overall Physiological
~25–28
years
≈ 4–7 yrs younger than birth age
Resting Heart Rate43 bpm
Nightly HRV median~104 ms
Estimated VO₂max~55–57 mL/kg/min
BMI21.6 (lean)
Your HRV sits above the population median for every age bracket — even 20–24yo average ~57 ms vs your ~104 ms — so your heart and nervous system are genuinely younger, landing ~22–25. The overall figure (~25–28) sits a little higher because it also blends systems I can't measure from a band (musculoskeletal, metabolic), and because the HUNT reference cohort is Caucasian (which modestly overstates a Southeast-Asian VO₂max percentile). So: your heart is ~22–25, your whole body ~25–28. Estimate only — not a clinical measurement.

Free Tests to Refine It no expensive labs needed

Two self-serve, no-cost ways to sharpen the estimate. The Cooper Test gives a real VO₂max in ~12 minutes; PhenoAge runs on a blood panel you may already have.
Cooper Test — VO₂max

Run as far as you can in 12 minutes

Formula: (distance − 504.9) ÷ 44.7. For a 32yo male, ~45–50 is "Excellent"; 50+ is "Superior".
PhenoAge — from bloodwork

Plug in a routine CMP / CBC panel

Needs 9 markers: albumin, creatinine, glucose, CRP, lymphocyte %, MCV, RDW, alkaline phosphatase, WBC. Get them from a standard CMP+CBC — no new test if you have recent labs.
Free calculators: search "PhenoAge calculator" (Yale/Levine) or Aging.Ai 3.0. Enter the 9 values and it returns a phenotypic age from your blood chemistry.
Sitting-Rising Test — musculoskeletal

0–10 score, 30 seconds

Sit on the floor cross-legged, stand back up without using hands, knees, or arms. Start at 10 points, drop 1 for each body part used (hand to floor, knee, forearm, etc.). 8–10 = aging exceptionally well; <6 = higher all-cause mortality risk.

Estimated Percentile vs 32-year-old male

Approximate — based on published normative ranges for healthy men aged 30–34. Lower is healthier for RHR.
Resting Heart Rate — 43 bpm~95th percentile (fitness)
60+ avg50454340 elite
Nightly HRV (median) — 104 ms~88th percentile
~55 avg90104120+ elite
Sleep Efficiency — 94.5%~75th percentile
~80% typical8894.598 elite
Blood Oxygen (SpO₂) — 97%~70th percentile
94 borderline969798 optimal
Daily Steps — ~9,400~65th percentile
<5k under5k7.5k10k+
Tennis Conditioning (avg HR)~80th percentile
deconditioned120132155+ intense

Detail Comparison your value vs reference

MetricYour ValueAge-32 Male RefEst. %ileAssessment
Resting Heart Rate43 bpm60–70 bpm~95Elite cardiovascular fitness
Nightly HRV median104 ms45–60 ms~88Strong parasympathetic recovery
HRV base range64–114 msWide dynamic range = good
Sleep Efficiency94.5%85–90%~75Good sleep quality
Blood Oxygen (SpO₂)97%95–98%~70Normal
Daily Steps~9,4007,000–10,000~65Healthy — at/above population average
Peak HR (tennis season)159 bpmHigh intensity sustained
Tennis volume46 hrsElite-level sport volume
Gym volume~31 sets/wkSolid strength training load
Gym tonnage~4,050 kg/wkConsistent weekly load
Activity Energy392 kcal/d~250 kcal/d~75High expenditure

Trends

Resting Heart Rate (daily)

38526606·2608·26
Consistently 41–48 bpm. Single spike to 63 on Jun 12 (outlier).

Nightly HRV (median)

408813506·2608·26
Avg ~99 ms across valid nights, rising Jun→Aug (84→104).

Sleep Duration (valid nights)

071406·2608·26
Variable 4–13 hrs. Many nights the band was not worn (excluded).

Is Something Wrong with the Band?

Looks genuine (not a broken sensor)

  • RHR 41–48 is rock-stable across 76 days — a defect produces erratic jumps, not a tight band.
  • HRV baseline climbing (Jun 84 → Aug 104) is real cardiac adaptation, the opposite of a glitch.
  • Peak HR declining (187 June → 174 max August) is consistent with improving fitness, not sensor failure.
  • No >200 or <30 bpm artifacts; the only "0" HR readings are the typical few-second sensor-wake at session start (0.2–2.5%).

The "too elite" verdict

Your RHR (43) and HRV (~104) are genuinely elite for 32 — the band is doing its job. The outliers (37h sleep, 1h fragments) are measurement artifacts, not a sensor that overreports. Your real step count is ~9,400/day — healthy, not low. The one true gap: wear the band consistently at night so HRV/sleep coverage is dense enough to trust the recovery trend.

All Activities BOOBP log

Full Mi Fitness activity log · every session tracked by the band.
Date Type Min Steps kcal Dist Avg HR Max HR

Gym Log BOOBP strength training

Every logged session since Jan 2023 · red dots mark gym days. Click a day to see the full workout on the right.
MoTuWeThFrSaSu
gym day
Select a day

Letter to myself, for the down days

Read when lost or low. Written 25 Aug 2026 · by me, for me.
Read this when you're down
Something in you is hurting right now. Start there.

Before you fix anything, do this one thing: stop treating the feeling like an enemy. The heaviness you feel today is not a malfunction and not a character flaw. It is an old, loyal messenger — a part of you that learned, long before you had words, that love had to be earned and rest had to be justified. It showed up today because something touched that old wound. That's all. It's not truth, and it's not an order. It's a child's conclusion still knocking on an adult's door.

Gabor Maté asks the right question of every struggle: not why are you like this, but why does this hurt — and what did you learn to do about it? You learned to be your own caretaker because nobody else could do it. It worked. It kept you whole. And now the same reflex tells you that a slow week, a failed attempt, or an empty calendar means you are empty. Notice the leap. A situation has a status. You have worth. The two got welded together by a childhood that isn't happening anymore.


Before anything else, understand why this letter is not a nice-to-have. This is not self-improvement garnish, not one more optimization stacked on a life that already works. Here is why it is medicine, and urgent medicine:

Because the old program doesn't wait for your permission. If you never look at this floor of yourself, nothing stays neutral — the wound simply runs unattended, and it will keep writing your choices for you. It chose your stinginess, your hesitation to send imperfect work, your refusal of a fruit-stall auntie's mango. Left unseen, it chooses bigger things: which risks you never take, which loves you never let land, how small you quietly agree to stay. Nobody decides to live their father's life. They just never look at the script they were handed — and act it out line by line. Reading the script is the only way to hold the pen.

Because what you believe about your worth sets the actual path of your life. Bar luck and circumstance, people don't get the life their talents allow — they get the life their beliefs allow. A man convinced he must earn his place takes the safe job, swallows the insult, skips the ask. Same man, one belief different, walks a different street entirely. This is not motivation-talk. You've watched it happen in the same household, two generations apart.

Because it doesn't stop with you. The program transfers without consent — through dinner-table sighs after a bad day, through how visibly you need to win. Whatever relationship you settle into with this wound, your child inherits a copy. Doing this work is not pampering yourself. It is interrupting a hand-me-down.

And because the body has been keeping the ledger all along. Decades of "I am only okay when I produce" is stress that never fully switches off, and unexpressed hurt doesn't evaporate — it lodges. Maté's whole clinical life points at one finding: the people who "coped beautifully" with impossible demands were often the ones whose bodies eventually said no. Your 42-beat heart is not an excuse to skip this work. It's the reason to do it while it's cheap.

So when the mind whispers this is soft, get back to chasing — hear that for what it is: the old defense, defending itself. Looking at the wound was never the detour from your life. It is the shortest road back to it.

And one more thing you already know but keep forgetting: you spent years calling your own way of seeing things weird — then heard comedians say your exact thoughts to millions who loved them. Millions. That was never proof you were strange. It was proof your instrument sees clearly and you've been keeping it quiet. The difference between you and the man on stage was never the seeing — it's the permission. You were never the weird one in the room; you were the quiet one. Quiet is a habit, not an identity. Say the true thing plainly, in your own voice, and watch what happens.


So here is the practice — small, physical, doable today:

1. Name it without shame. Say plainly: "There's the old not-enough feeling." Not I am not enoughthere's the feeling. That one word of distance is the whole beginning. What you can observe, you are not fully inside of.

2. Ask what the feeling is pointing at, then thank it. Underneath every spiral there's a real need — usually rest, connection, or honest work. Find the need. The feeling will loosen its grip the moment you take its concern seriously instead of arguing with it.

3. Give your body what it actually needs. The wound lives in the nervous system, not in logic — so logic won't release it. Drink water. Walk outside. Hit tennis balls. Let the body complete whatever stress cycle the mind started. Movement is how a body says we're safe now.

4. Do one small real thing. Not to prove your worth — to give the day a floor. Send the message. Make the bed. Take ten swings. Small and real beats grand and imagined. Self-trust is built exactly here, in kept promises to yourself, one at a time.

5. Receive something today. This is your hardest rep. Let someone be kind to you without paying it back, without deflecting, without earning it. Accepting care cleanly is how the old equation — love must be earned — finally gets rewritten.


And remember this about the scoreboard: you were worthy of love as a baby who produced nothing. You will be worthy of it as an old man who can barely swing a racquet. In between, everything you achieve is play — beautiful, serious play — never the price of your place on earth.

The feeling will visit again. Let it. Each time, you meet it a little differently, and that — not perfection, just the meeting — is how the wound heals.

Be gentle with yourself tonight. Then move, tomorrow morning, gently too.

— Me