How well your body recovers from stress. Higher = better recovery. Your nervous system's "bounce-back" score.
How to improve: Better sleep (#1), Zone 2 cardio, morning walks, magnesium before bed.
COMT A;A means slower cortisol clearance — exercise is how you clear it.
How hard your heart works when you're doing nothing. Lower = more efficient heart.
How to improve: Zone 2 cardio (#1), daily walking, hydration, less caffeine after 2pm.
How much oxygen your body can use during exercise. Higher = better endurance. Strongly linked to longevity.
How to improve: Zone 2 cardio (sustained effort), progressive run training, consistency over intensity. You peaked at 35.46 in Feb when cardio was regular.
Total sleep AND deep sleep matter. Deep sleep is when your body repairs muscle and clears stress hormones.
The link: Exercise → deeper sleep → better HRV → better recovery. Your data confirms this pattern. The 4-day gap broke the cycle.
How to improve: Exercise daily (#1), bed by 10:30pm, magnesium, no screens after 10pm.
| Level | Range (ms) | You | What It Means |
|---|---|---|---|
| Excellent | 60+ | Elite recovery. Your nervous system bounces back fast. Typical of serious athletes and meditators. | |
| Good | 48–59 | Strong parasympathetic tone. Your body handles stress well and recovers overnight. This is your target. | |
| Average | 35–47 | Normal for your age. Room for improvement through consistent cardio, better sleep, and stress management. | |
| Below Average | 20–34 | ◄ 32.5 | You are here. Your autonomic nervous system is under load. With COMT A;A, your body clears stress hormones slower than average — so stress compounds. Sleep quality is the #1 lever. Zone 2 cardio is #2. Every point gained here means measurably better recovery. |
| Low | <20 | Chronic stress or illness territory. Would warrant medical attention if sustained. |
| Level | Range (bpm) | You | What It Means |
|---|---|---|---|
| Athlete | <50 | Elite cardiovascular efficiency. Heart pumps more blood per beat. Common in endurance athletes. | |
| Excellent | 50–59 | Very strong heart fitness. Likely running or cycling regularly at moderate volumes. | |
| Good | 60–64 | Solid baseline. Your heart doesn't have to work hard at rest. This is the near-term target. | |
| Average | 65–74 | ◄ 67.3 | You are here. Normal range but higher than ideal. Consistent Zone 2 cardio (walking/light jog at conversational pace) is the most reliable way to drive this down. Your Marine background means the engine is there — it just needs mileage. |
| Above Average | 75–84 | Heart is working harder than needed at rest. Usually responds well to regular exercise. | |
| High | 85+ | May indicate deconditioning, chronic stress, or medical conditions. Worth discussing with a doctor if sustained. |
| Level | Range | You | What It Means |
|---|---|---|---|
| Superior | 46+ | Top 5%. Exceptional aerobic capacity. Longevity research links VO2 Max above 40 to significantly reduced all-cause mortality. | |
| Excellent | 40–45 | Well above average. Strong aerobic base. This is where longevity benefits become significant. | |
| Good | 36–39 | Above average. Your body efficiently delivers oxygen during exertion. Your Feb peak of 35.46 was knocking on this door. | |
| Fair | 31–35 | ◄ 33.2 | You are here. Average aerobic fitness. Peaked at 35.46 (Feb 18) when cardio was more consistent, now declining — likely from the 3+ week dance pause and reduced cardio volume. Walk-jog progression starting Mar 23 should reverse this trend. ACTN3 T;C genotype means you're wired for both power AND endurance. |
| Poor | 25–30 | Below average. Limited aerobic capacity. Even light exercise can feel demanding. | |
| Very Poor | <25 | Significant deconditioning. Associated with increased health risks. |
| Date | Total | Deep | REM | Core | Awake | HRV | Verdict |
|---|---|---|---|---|---|---|---|
| Mar 16 Sun | 6.2h | 0.5h | 1.7h | 4.0h | 0.1h | 30.7 | Low deep sleep, low HRV. Stress load visible. Core sleep dominant — body staying in light stages. |
| Mar 17 Mon | 5.3h | 0.4h | 1.5h | 3.4h | 0.0h | 34.1 | Short night but no wake-ups. HRV actually recovered — uninterrupted sleep matters more than duration sometimes. |
| Mar 18 Tue | 7.1h | 0.7h | 2.0h | 4.4h | 0.4h | 32.9 | Best night of the week. Hit 7+ hours, strong REM. HRV didn't spike — recovery is lagging behind sleep quality (normal with COMT A;A, takes 2–3 good nights). |
| Mar 19 Wed | 6.5h | 0.4h | 1.7h | 4.4h | 0.2h | 30.2 | Decent duration but deep sleep crashed. HRV dropped to week low. Something disrupted deep stage entry — late screen time? Caffeine timing? |
| Mar 20 Thu | 6.5h | 1.0h | 1.0h | 1.7h | 0.4h | 38.2 | Best HRV of the week — highest deep sleep of the week. Not a coincidence. Deep sleep is where cortisol clears. This is the target pattern. |
| Mar 21 Fri | 4.9h | 0.7h | 1.2h | 3.0h | 0.0h | 27.7 | Worst night. Under 5 hours = worst HRV of the week. Your body can't recover what it doesn't get. One bad night erases two good ones with COMT A;A. |
| Mar 22 Sat | 6.6h | 0.9h | 1.0h | 2.4h | 0.5h | 33.4 | Bounce-back night. HRV recovering. Deep sleep nearly hit 1h. More awake time than usual — may indicate residual stress from the short night before. |
| KM 1 | 6:47 | |
| KM 2 | 8:30 | |
| KM 3 | 7:33 |