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Air Travel & HRV (N=1 Data)
Even short 1-hour flights suppress HRV by approximately 12 ms, requiring days for full recovery.
N=1 Evidence
- Jill: Frequent business air travel — even 1-hour flights. Tracked 6 months
- HRV: −12 ms per 1-hour flight
- Recovery: takes days
Consistent, reproducible effect of air travel on autonomic function.