# Heart Data Export for Claude
You are helping me analyze my long-term heart data. Below is my cardiac data exported from Apple Health.

Export Version: 1.0
Generated: 2025-07-14T05:00:00Z
Source: Apple Health (on-device export)
Device(s): Apple Watch Series 10, Withings BPM
Locale: en_US
Time Zone: UTC (all timestamps are ISO-8601 UTC)
Date Range: 2025-01-15 through 2025-07-14
Readings: 120 · ECG records: 4 · Blood pressure readings: 3
Depth: Summary (statistics and monthly aggregates)

## Resting Heart Rate
HealthKit Identifier: HKQuantityTypeIdentifierRestingHeartRate
Unit: bpm (HealthKit unit: count/min)
Definition: Heart rate measured while at rest, as recorded by Apple Health.
Statistics: avg 60, median 60, min 56, max 64, sd 2.1, n=30, trend falling
Monthly averages:
  2025-01: 62 (n=3)
  2025-02: 62 (n=5)
  2025-03: 61 (n=5)
  2025-04: 60 (n=5)
  2025-05: 60 (n=5)
  2025-06: 59 (n=5)
  2025-07: 58 (n=2)

## Heart Rate Variability
HealthKit Identifier: HKQuantityTypeIdentifierHeartRateVariabilitySDNN
Unit: ms (HealthKit unit: ms)
Definition: The variation in time between successive heartbeats (SDNN), as recorded by Apple Health.
Statistics: avg 40, median 40, min 32, max 46, sd 3.6, n=30, trend rising
Monthly averages:
  2025-01: 36 (n=3)
  2025-02: 37 (n=5)
  2025-03: 39 (n=5)
  2025-04: 40 (n=5)
  2025-05: 41 (n=5)
  2025-06: 42 (n=5)
  2025-07: 42 (n=2)

## VO₂ Max
HealthKit Identifier: HKQuantityTypeIdentifierVO2Max
Unit: mL/kg·min (HealthKit unit: ml/(kg*min))
Definition: Apple Health's estimate of maximal oxygen consumption during exercise (cardio fitness).
Statistics: avg 43.2, median 43.2, min 42.2, max 44.2, sd 0.5, n=30, trend stable
Monthly averages:
  2025-01: 42.5 (n=3)
  2025-02: 42.8 (n=5)
  2025-03: 43.0 (n=5)
  2025-04: 43.2 (n=5)
  2025-05: 43.5 (n=5)
  2025-06: 43.7 (n=5)
  2025-07: 43.8 (n=2)

## Blood Oxygen
HealthKit Identifier: HKQuantityTypeIdentifierOxygenSaturation
Unit: % (HealthKit unit: %)
Definition: The percentage of oxygen carried by red blood cells (SpO₂).
Statistics: avg 97, median 97, min 96, max 98, sd 0.8, n=30, trend stable
Monthly averages:
  2025-01: 97 (n=3)
  2025-02: 97 (n=5)
  2025-03: 97 (n=5)
  2025-04: 97 (n=5)
  2025-05: 97 (n=5)
  2025-06: 97 (n=5)
  2025-07: 96 (n=2)

## ECG
HealthKit Identifier: HKDataTypeIdentifierElectrocardiogram
Definition: Single-lead ECGs with Apple's rhythm classification, passed through verbatim.
Records: 4
Classification counts:
  Sinus Rhythm: 3
  Atrial Fibrillation: 1

## Blood Pressure
HealthKit Identifier: HKCorrelationTypeIdentifierBloodPressure
Unit: mmHg
Readings: 3
  2025-02-14: 124/81
  2025-04-15: 119/78
  2025-06-24: 122/80