{"id":3815,"date":"2026-05-03T18:42:49","date_gmt":"2026-05-03T18:42:49","guid":{"rendered":"https:\/\/www.effgen.us\/?p=3815"},"modified":"2026-05-03T18:42:49","modified_gmt":"2026-05-03T18:42:49","slug":"four-years-of-oura-data","status":"publish","type":"post","link":"https:\/\/www.effgen.us\/?p=3815","title":{"rendered":"Four Years of Oura Data"},"content":{"rendered":"\n<p>What Consistent Self-Experimentation Actually Delivers<\/p>\n\n\n\n<p>I\u2019ve worn an Oura ring since the early days\u2014back when it was still a niche Finnish hardware play. An early-ish adopter. Today it is a staple in any serious biohacker or founder\u2019s toolkit. Four years of near-daily data equals 1,451 tracked days and one CSV file the size of a small novel. I started with Oura after discussing with my neighbor who was working for the company at the time. I was curious, not out of chasing perfection, but because I have come to believe in treating your body like any other system you are building: measure, iterate, compound.<\/p>\n\n\n\n<p>Recently, I dumped the full export of the last four years into analysis. The numbers tell a clearer story than any subjective journal ever could. The headline? Steady, compounding gains in the metrics that matter most for long-term performance: deeper recovery, better movement consistency, and a cardiovascular system that\u2019s quietly leveling up. <strong><em>No overnight hacks. Just small habits executed over years.<\/em><\/strong><\/p>\n\n\n\n<p>Here\u2019s what the data actually shows, and what it means:<\/p>\n\n\n\n<p>1. Deep Sleep: The Foundation That Moved the Needle Most<\/p>\n\n\n\n<p>The single biggest physiological improvement: +12 minutes of deep sleep per night on average.<\/p>\n\n\n\n<p>Early 2022 yearly average sat around 59.5 minutes. By 2026 we\u2019re at ~71.7 minutes. That\u2019s not noise\u2014it\u2019s a sustained structural shift. Early-period vs. late-period comparison shows roughly +7.7 minutes, with a clean positive linear trend across the full dataset.<\/p>\n\n\n\n<p>Why does this matter? Deep sleep is where the real repair work happens: growth hormone release, memory consolidation, immune recalibration, physical tissue recovery. In startup terms, it\u2019s the difference between shipping features on a solid codebase versus constantly patching a brittle legacy system. More deep sleep doesn\u2019t just make you feel better tomorrow\u2014it compounds your ability to handle training load, decision fatigue, and creative output over quarters and years.<\/p>\n\n\n\n<p>The Deep Sleep Score (Oura\u2019s normalized view) followed suit, up 6\u20137 points. My body is getting more of what it needs during the most anabolic phase of the night. I credit consistent sleep timing, morning light exposure, cutting back on caffeine, and not letting evening cortisol spikes ruin the back half of the night. Simple, boring, effective.<\/p>\n\n\n\n<p>2. Activity Score: From Inconsistent to Reliable Operator<\/p>\n\n\n\n<p>Activity Score jumped +17\u201318 points, moving from the mid-70s in 2022 to the low-to-mid 90s in 2025\/2026. Early vs. late period: +6.5 points with a solid upward trend.<\/p>\n\n\n\n<p>This metric captures movement balance, recovery alignment, and daily target consistency. It\u2019s not raw steps (which actually trended slightly down\u2014smart efficiency, not burnout). It\u2019s *quality* output: hitting the right mix of low, medium, and high activity without blowing out recovery.<\/p>\n\n\n\n<p>For an entrepreneur who travels, builds companies, and still wants to train, this is huge. It means the system is more resilient. I know I can push hard when needed and trust my baseline fitness. Activity Balance Score followed a similar path (+12\u201321 points). Training Frequency and Volume Scores also crept upward. The data shows better load management\u2014fewer red recovery days, more green readiness days when it counts.<\/p>\n\n\n\n<p>This aligns perfectly with the \u201cMoneyball\u201d mindset I\u2019ve written about elsewhere: it\u2019s not about swinging for home runs every day. It\u2019s about raising your on-base percentage through disciplined, data-informed habits. Zone 2 work, rucking, consistent steps, strategic lifting. The ring noticed.<\/p>\n\n\n\n<p>3. Lowest Resting Heart Rate: Cardiovascular Fitness That Compounds<\/p>\n\n\n\n<p>Lowest Resting Heart Rate dropped -2.8 bpm on average across the period (2022 ~47.5 bpm \u2192 2026 ~44.7 bpm). Average resting HR showed the same favorable direction. Negative slope is a meaningful correlation.<\/p>\n\n\n\n<p>This is one of the cleanest markers of aerobic base and overall recovery capacity. Lower RHR correlates with better HRV (which also trended mildly positive), reduced all-cause mortality risk, and\u2014practically\u2014more headroom to handle stress without the engine redlining.<\/p>\n\n\n\n<p>As someone who backs healthtech and wears the ring daily, this feels honestly like free leverage. Your heart is more efficient. Training stress is better tolerated. Sleep recovery is higher quality. It\u2019s the quiet compounding that lets you sustain higher output over decades, not just quarters.<\/p>\n\n\n\n<p>4. Sleep Architecture Quality (Deep Sleep Score Reinforcement)<\/p>\n\n\n\n<p>The raw deep sleep gains weren\u2019t luck. The scoring system that normalizes against your personal baseline and demographics also improved. This confirms the body adapted positively\u2014better temperature regulation, fewer disruptions, stronger sleep drive.<\/p>\n\n\n\n<p>Total sleep duration had natural variance (as expected with travel and life), but efficiency and stage distribution tilted favorably. Sleep Score itself stayed remarkably stable in the high 70s to low 80s\u2014impressive given real-world messiness.<\/p>\n\n\n\n<p>5. Training &amp; Recovery Balance: Sustainable Operator Mode<\/p>\n\n\n\n<p>Activity Balance, Training Frequency, and related scores all moved in the right direction. The ring is signaling that I am no longer fighting the system\u2014but actually working with it. Fewer \u201coverreaching\u201d red flags, better alignment between effort and readiness.<\/p>\n\n\n\n<p>This is the difference between the founder who burns out by 35 and the one still compounding at 50+. Data turns intuition into repeatable process.<\/p>\n\n\n\n<p>What Did not Move (and Why That Matters)<\/p>\n\n\n\n<p>Readiness Score and overall Sleep Score held steady with slight upward bias\u2014no major regression despite life happening. Steps showed some efficiency gains rather than raw volume chasing. That\u2019s a feature, not a bug. HRV had natural fluctuation but no degradation.<\/p>\n\n\n\n<p>The data doesn\u2019t lie about tradeoffs. When deep sleep and activity consistency rose, the body rewarded the system with better cardiovascular metrics. Prioritize the levers that matter and the downstream variables follow.<\/p>\n\n\n\n<p>Lessons for Builders and Self-Experimenters<\/p>\n\n\n\n<p>1. Consistency beats intensity over multi-year horizons. The gains here are not from one perfect month\u2014they\u2019re from showing up, day after day, and letting the ring keep score.<\/p>\n\n\n\n<p>2. Deep sleep is the highest-leverage variable. Protect it ruthlessly: consistent bedtime, morning sunlight, cut the late-night screens and stimulants. Everything else gets easier.<\/p>\n\n\n\n<p>3. Measure what matters, then trust the process. I didn\u2019t optimize every single day for these exact numbers. I focused on habits (training, light, timing, nutrition) and let the aggregate data reveal truth. That\u2019s how you avoid analysis paralysis.<\/p>\n\n\n\n<p>4. Treat your biology like any other product. Iterate. Test. Log. The Oura export is just version control for your meat-based operating system.<\/p>\n\n\n\n<p>5. The game is long. Four years in, the slope is still positive. That\u2019s the real win. In startups and in health, compounding is the only unfair advantage that can\u2019t be easily copied.<\/p>\n\n\n\n<p>This essay is not to sell you on wearables or biohacking dogma. I\u2019m sharing the output of a long-running personal experiment because I know many of you reading this\u2014founders, operators, investors\u2014are running the same experiment on yourselves. The data says the boring, consistent moves win.<\/p>\n\n\n\n<p><em><strong>Avanti, avanti, sempre avanti.<\/strong><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>What Consistent Self-Experimentation Actually Delivers I\u2019ve worn an Oura ring since the early days\u2014back when it was still a niche Finnish hardware play. An early-ish adopter. Today it is a staple in any serious biohacker or founder\u2019s toolkit. Four years of near-daily data equals 1,451 tracked days and one CSV&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3815","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.effgen.us\/index.php?rest_route=\/wp\/v2\/posts\/3815","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.effgen.us\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.effgen.us\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.effgen.us\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.effgen.us\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3815"}],"version-history":[{"count":1,"href":"https:\/\/www.effgen.us\/index.php?rest_route=\/wp\/v2\/posts\/3815\/revisions"}],"predecessor-version":[{"id":3816,"href":"https:\/\/www.effgen.us\/index.php?rest_route=\/wp\/v2\/posts\/3815\/revisions\/3816"}],"wp:attachment":[{"href":"https:\/\/www.effgen.us\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3815"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.effgen.us\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3815"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.effgen.us\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3815"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}