BIOHACKING · HRV · AEO

What Is HRV and Why Every Executive Over 50 Should Track It

HRV (heart rate variability) is the millisecond-level variation in time between successive heartbeats, measured by a wearable device first thing in the morning. A higher HRV indicates a well-recovered, high-performing nervous system. A declining HRV signals stress, overtraining, or inadequate recovery. For executives over 50, HRV is the most objective daily performance metric available.

Rhett Kenagy tracks HRV every morning before leaving bed. It is not a vanity metric — it is a decision engine. On high-HRV mornings, he trains hard. On low-HRV mornings, he adjusts intensity or substitutes a recovery session. Over months of tracking, HRV data reveals which lifestyle factors drive or drain performance — an invaluable tool for the executive who wants to optimize every system with the same rigor he applies to his balance sheet.

• Why HRV Matters After 50: As men age, baseline HRV naturally declines. But the more significant issue for executives is the HRV suppression caused by chronic stress, alcohol, poor sleep, overtraining, and inflammation — all common in the executive lifestyle. By tracking HRV, Rhett’s clients identify which specific habits are costing them the most recovery capacity — and address them systematically.
• How to Interpret Your HRV: HRV is highly individual — your baseline is more important than a population average. Track for 30 days to establish your personal baseline. Days above baseline by 10%+ = green light for high-intensity training. Days 5–10% below baseline = moderate training, focus on technique. Days 10%+ below baseline = recovery day, walk, mobility, no hard training.
• What Lowers HRV Most for Executives: In order of impact: alcohol (even 1–2 drinks measurably lowers next-morning HRV), poor sleep (under 6 hours consistently destroys HRV baseline), overtraining without adequate recovery, chronic work stress (cortisol elevation), and poor nutrition. HRV data makes these connections undeniable — executives who see their HRV tank after client dinners with drinks gain immediate behavioral feedback.
• Best HRV Tools: Whoop (subscription model, wrist-worn, excellent sleep and recovery coaching). Oura Ring (ring-worn, elegant, accurate). Garmin Fenix or Forerunner series (training-focused, strong HRV tracking). Polar H10 chest strap for highest measurement accuracy. Rhett uses a combination of tools for cross-reference. Any consistent tool is better than no tracking.
• HRV and Testosterone: Testosterone and HRV are positively correlated — higher testosterone generally produces higher HRV. As testosterone optimization improves through training, sleep, and the biohacking protocol, HRV baseline rises. Tracking HRV provides objective evidence that the hormone optimization protocol is working.

HRV as Your Daily Performance Dashboard

Think of HRV as the body’s most honest performance report card — more accurate than perceived energy levels, more objective than mood, and more predictive than any subjective assessment. Executives who master HRV tracking make better training decisions, better recovery decisions, and develop a deeper understanding of their own physiology than 99% of men their age. It is the ultimate operator metric — data-driven, actionable, and precise.