What Actually Adds Healthy Years (According to the Evidence)
You can't buy more years in a bottle. But the research is clear: five basic habits add 12-14 years of life, and your fitness predicts death better than smoking. Here's what actually moves healthspan.
Read guide →
The Blue Zones: What the World's Longest-Living People Actually Do
Five places on earth produce far more centenarians than anywhere else. Here is what the research shows they actually have in common — and what you can take from it today.
Read guide →
How Much Exercise Do You Actually Need? The Longevity Dose
150–300 minutes of moderate exercise per week cuts all-cause mortality by ~20%. Here's what the evidence says about the longevity dose — and when more stops helping.
Read guide →
Why Muscle Is the Organ of Longevity (and Grip Strength Predicts Your Lifespan)
If you protect one thing as you age, make it muscle. Grip strength alone predicts mortality — the weakest grip carries a 41% higher death risk. Here's why muscle matters, and how fast it responds.
Read guide →
Prediabetes: 115 Million Americans Have It, and 8 in 10 Don't Know
More than 2 in 5 U.S. adults have prediabetes — and about 8 in 10 don't know it. It's the quiet on-ramp to type 2 diabetes and heart disease. The good news: it's often reversible, and the fix is free.
Read guide →
How Much Protein Do You Need as You Age?
The standard protein RDA is likely too low for adults over 50. Here is what the research says about how much protein you actually need to preserve muscle, strength, and independence as you age.
Read guide →
Sleep and Longevity: Why 7 Hours Is the Sweet Spot
Too little sleep raises your mortality risk. So does too much. Here's what the evidence says about the 7-hour sweet spot — and what to do about it.
Read guide →
VO2 Max: The Fitness Number That Predicts Your Lifespan
A 2018 JAMA study of 122,007 people found the least-fit group had 5× the mortality risk of the fittest. Here's what VO2 max is and how to improve yours.
Read guide →Zone 2 Cardio: The Longevity Workout Explained
Zone 2 cardio builds the aerobic base that research links to a longer, healthier life. Here is what it is, why it works, and how to do it right.
Read guide →