Evidence-based guidance to help you understand your body, improve your health, and live younger longer.

Ancient Biology, Modern Life — Part 1: Why Morning Sunlight Changes How You Feel

The Hidden Biology of Everyday Life INPUT 01 · Morning Light · Question it answers: Is it safe here? · What it restores: A predictable, well-timed day — one of

The Longevity Scorecard: Ten Signals That Predict How Well You Age

Longevity -> Measure It. Train It. Extend It. Your last lab panel told you what is currently wrong with you. It did not tell you what is currently changing. That

Longevity Scorecard Series — Part 10: Why Your Sleep Schedule Matters

Longevity -> Measure It. Train It. Extend It. SIGNAL 10 · Sleep Consistency · System: Nervous · What it measures: Not how long you sleep, but how reliably — whether

Longevity Scorecard Series — Part 9: Why Strength Predicts How Well You Age

Longevity -> Measure It. Train It. Extend It. SIGNAL 09 · Muscle Mass · System: Musculoskeletal · What it measures: Not how much muscle you have, but which direction it

Longevity Scorecard Series — Part 8: Why Walking After Meals Supports Healthy Aging and Longevity

Longevity -> Measure It. Train It. Extend It. SIGNAL 08 · Walking After Meals · System: Metabolic · What it measures: Whether movement is arriving at the moment your body

Longevity Scorecard Series — Part 7: How Many Steps Help You Live Longer?

Longevity -> Measure It. Train It. Extend It. SIGNAL 07 · Daily Steps · System: Metabolic · What it measures: Not how fit you are, but how often — across

Longevity Scorecard Series — Part 6: Why Stability Predicts Healthy Aging

Longevity -> Measure It. Train It. Extend It. SIGNAL 06 · Balance · System: Nervous · What it measures: How well three separate streams of sensory information are still being

Longevity Scorecard Series — Part 5: What The Sit-To-Stand Test Say About Your Health And Longevity

Longevity -> Measure It. Train It. Extend It. SIGNAL 05 · Sit-to-Stand · System: Musculoskeletal · What it measures: Whether your legs can still move your body against gravity without

Longevity Scorecard Series — Part 4: Why Aerobic Fitness Predicts Healthy Aging

Longevity -> Measure It. Train It. Extend It. SIGNAL 04 · VO₂ Max · System: Metabolic · What it measures: The ceiling on how much energy your body can produce

Longevity Scorecard Series — Part 3: What Your Pulse Says About Your Health

Longevity -> Measure It. Train It. Extend It. SIGNAL 03 · Resting Heart Rate · System: Nervous · What it measures: How hard your body has to work to do

Longevity Scorecard Series — Part 2: Why Hand Strength Predicts Healthy Aging

Longevity -> Measure It. Train It. Extend It. SIGNAL 02 · Grip Strength · System: Musculoskeletal · What it measures: How much force your body can still produce on demand

Longevity Scorecard Series — Part 1: Why Your Walking Pace May Predict How Well You Age

Longevity -> Measure It. Train It. Extend It. SIGNAL 01 · Walking Speed · System: Nervous · What it measures: How efficiently your brain, nerves, heart, and muscles still cooperate