the25percent newsletter
A science-backed longevity training app for enthusiasts ready to invest seriously in their healthspan. After over 15 years as a UX consultant, I realized that most fitness advice optimizes you for ages 25 to 30, not 60 and above. Now I'm building the demanding but achievable protocol I wish existed, backed by the latest longevity science. Join me for evidence-based insights on training, healthspan, habit formation, and the reality of bootstrapping a health-tech startup.
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Smarter Training. Better Results.
Explore longevity, the smart way.
The Century Kit is a science-backed discovery box for the longevity-curious. Each month, we curate a new selection of supplements, functional foods, and health tools inspired by emerging research and global traditions linked to healthy aging.
From modern clinical insights to the time-tested rituals of long-lived cultures, each kit empowers users to explore safe, effective longevity practices—without the high cost or long-term commitment.
Our goal? To become the most trusted entry point into the world of aging well.
The Century Kit: Curated experiences to help you discover what supports a longer, better life—one kit at a time.By Dan Go
"Word for word the most valuable fitness newsletter on the planet". Hi, I'm Dan Go. Each week, I send out actionable tips on how to optimize your health & body. Join 455,000+ subscribers at the link below.Coach Henri
Hi! 👋🏻 I'm a Running and Health Coach, and whether you're just starting out running or you're an experienced marathoner, our community offers support, motivation, and resources tailored to all levels of runners. Enjoy weekly insights on training techniques, nutrition advice, gear reviews, and personal stories that inspire and guide. Become a part of a vibrant running family dedicated to moving forward together. Lace up, sign up, and let’s hit the pavement as a team!Helping you deepen your relationship with God.
My name is Johnny Chang. I'm an ex-gang member turned pastor. My goal is to help you gain biblical clarity and support you with daily guidance to get closer to God in this chaotic world. Drop your email if you'd like a free Daily Devotion written by me, every morning. There is nothing more powerful than starting your day with God's Word!You can unsubscribe at any time.