Peak Saunas Wellness Blog

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Apr 15, 2026

VO2 Max as a Longevity Predictor: Better Than Cholesterol?

VO2 max—the maximum amount of oxygen your body can utilize per minute—is one of the strongest predictors of lifespan. A person with high VO2 max at age 50 will likely...

Apr 15, 2026

How Temperature Affects Sleep Quality (The Science of the Bedroom)

Temperature is one of the most powerful environmental factors controlling sleep quality, yet most people ignore it. Your bedroom temperature has a larger impact on sleep architecture than most interventions....

Apr 15, 2026

Sunlight and Circadian Rhythm: Why Your Ancestors Were Right

Your circadian rhythm—your internal 24-hour biological clock—controls virtually every aspect of health: sleep, metabolism, hormone production, immune function, and inflammation. Light exposure is the master regulator of this clock. Sunlight,...

Apr 15, 2026

Social Connection and Longevity: The Most Underrated Health Factor

Loneliness is as damaging to longevity as smoking 15 cigarettes per day. Social connection is one of the strongest predictors of lifespan and healthspan. Yet in modern society, loneliness is...

Apr 14, 2026

Sleep and Telomere Length: How Poor Sleep Ages Your DNA

Your telomeres—the protective caps on your chromosomes—shorten with age. But the rate of shortening isn't fixed. One of the most powerful predictors of accelerated telomere loss is sleep. Poor sleep...

Apr 14, 2026

NAD+ and Aging: What the Science Says (And What It Doesn't)

NAD+ (nicotinamide adenine dinucleotide) is a crucial molecule that declines with age. It's central to energy metabolism, DNA repair, and sirtuin activation—all fundamental to longevity. The question is: does directly...

Apr 14, 2026

Morning Cortisol Spikes: Optimize Them or Fight Them?

Your cortisol peaks within the first hour of waking—sometimes 50% higher than baseline. This is normal, essential, and often misunderstood. The question isn't whether to eliminate this spike; it's whether...

Apr 14, 2026

Mitochondrial Health: Why Your Energy Factory Determines How You Age

Your mitochondria are the power plants of your cells. They convert nutrients into ATP (energy). When mitochondrial function declines, so does everything else: cognition, muscle, metabolism, longevity. Understanding what damages...

Apr 14, 2026

The Longevity Mindset: How Your Beliefs About Aging Affect How You Age

Your beliefs about aging physically shape how you age. Research on age perception shows that people who believe aging is inevitable decline age faster biologically and die younger. Conversely, people...

Apr 14, 2026

Inflammaging: The New Science of Inflammation-Driven Aging

Inflammaging—chronic, low-grade systemic inflammation that increases with age—is now recognized as a hallmark of aging itself. It's not a consequence of aging; it's a driver of it. Understanding inflammaging and...

Apr 14, 2026

Ice Baths vs Saunas: Which One Should You Do (And When)

The biohacking world has polarized around thermal exposure: sauna devotees versus cold plunge enthusiasts. But this is a false choice. Both are valuable, they work through different mechanisms, and the...

Apr 14, 2026

HRV as a Longevity Biomarker: What Your Heart Rate Variability Tells You

Heart rate variability (HRV)—the variation in time between heartbeats—is one of the most predictive longevity biomarkers available. Yet most people have never heard of it. Learning to measure, interpret, and...

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