Project 40 · Monday, November 2, 2026
Day 444
The countdown begins.
Rootline
Project 40
Project 40
DAY
444
OF 444
04
Student of Longevity
SL-01·Why we age
What happens if I spend 444 days learning how to age better?
One card a day until I turn 40. Here's the plan.
Learning today
for a longer tomorrow.
for a longer tomorrow.
04 · Student of Longevity · SL-01
What I found
Most of how we age isn't written in our genes. Twin studies suggest genes explain only a modest share of lifespan; the rest is shaped by what we do, day after day.
Why it matters for aging
Small habits, repeated for years, add up to the body we live in at 50, 70 and 90.
Remember this
Aging well is mostly built, not inherited.
Try this
Pick one small thing to do every day this week, and write it down.
Not medical advice. Ask your doctor first.
Full notes
and sources
and sources
Reviewed Nov 2026
My journey, your choices
Everything here is my personal experience and what I'm learning. It's not medical advice and I'm not a doctor. What works for me may not be safe for you: you're responsible for your own decisions, so please check with your doctor first, especially if you're pregnant, breastfeeding, take medication or have a health condition. Read the full disclaimer