AGING?F***THAT!
AGING?F***THAT!  ·  10 TENETS OF HEALTHSPAN EXTENSION  ·  REVERSE YOUR BIOLOGICAL AGE  ·  DAILY EXERCISE WITHOUT EXCEPTION  ·  KETO · LOW CARB · HIGH PROTEIN  ·  SNOWBOARD TILL YOU'RE 80  ·  YOUR NORTH STAR IS EVERYTHING  ·  PEPTIDES · BIOMARKERS · DATA  ·  #AGINGFTHAT  ·  AGING?F***THAT!  ·  10 TENETS OF HEALTHSPAN EXTENSION  ·  REVERSE YOUR BIOLOGICAL AGE  ·  DAILY EXERCISE WITHOUT EXCEPTION  ·  KETO · LOW CARB · HIGH PROTEIN  ·  SNOWBOARD TILL YOU'RE 80  ·  YOUR NORTH STAR IS EVERYTHING  ·  PEPTIDES · BIOMARKERS · DATA  ·  #AGINGFTHAT  · 
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// The Transformation

This Is What's Possible

Lee C. Stonehouse
"One hour of movement, dedicated to your longevity, every single day. That's the backbone. Everything else builds on it."

From age 26 to 51, Lee built a career on Wall Street and later as a CEO, building a family along the way. The priorities of a life as an avid physique competitor and PT then took second place for the next three decades.

At 35, a back injury left Lee incapacitated for weeks at a time, spending over $1,000 per month just to function, facing the prospect of vertebral fusion surgery.

But, the real turning point came in 2015. A major life event that could have broken him instead drove him back to one non-negotiable rule: an hour of movement, dedicated to longevity, daily, walking, stretching, the gym, whatever the day called for.

Since 2015 Lee went back to his PT roots and dug into the latest science on longevity, health and healthspan. Then, testing and applying the best methods for optimising fitness, lean mass, and functional health.

Using independent labs and doctors, he's captured detailed independent lab results from regular blood and hormone testing, DEXA scanning for infallible body composition metrics such as lean mass and bone density, and VO₂ Max cardiovascular output.

Many of Lee's metrics place him in the elite category for adults, not just for over-40s but for any age. The data, analysed in aggregate, is in line with elite athletes decades younger than his actual age.

It's not about looking good for your age. It's about enjoying your life with your friends and family for as long as possible, choosing the activities you want, not just the ones your body can still perform.

Lee C. Stonehouse
// About Lee

Age Reversal Leader & Author.

Since 2015 Lee went back to his PT roots and dug into the latest science on longevity, health and healthspan, before testing & applying the best methods for optimising fitness, lean mass, and functional health.

Using independent labs and doctors, he gathered results from regular blood & hormone testing, DEXA scanning, and VO₂Max testing.

Many of Lee's metrics place him in the elite category for adults, not just for over-40's but for any age, making him biometrically decades younger than his actual age.

A legacy of health, not just wealth: his children, Gracie, Aiden, and Sophie, have inherited the focus. The next generation is proving the tenets work across every age.

"I am building my longevity runway as I fly my plane of life, embracing fitness and longevity while building more of it. Playing and enjoying what my body can do, with friends and loved ones, in all weathers and landscapes, with a very clear certainty that I'll be doing it for at least another two or three decades."
63
Age
~44
Bio Age
HP / LC
Fuelling, +18:6 IF
365
Days/Year
50
VO₂ Max
47bpm
Resting HR
9.6%
Body Fat
85.7%
Lean Mass
3.6
Bone Density

🏆

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📖 AGING?F***THAT!
10 Tenets of Healthspan Extension
Lee C. Stonehouse
// The Book

The Healthspan Extension Manual.
10 tenets to live longer, stronger, younger.

AGING?F***THAT! is a practical guide to extending the healthy, active part of your life, your Healthspan, rather than simply adding more years to your lifespan. Lee takes the research, lessons and practices behind his own transformation and turns them into a straightforward system built around the 10 Tenets of Healthspan Extension.

This isn't about becoming a monk, living in a gym, or following another impossible wellness regime. It's about understanding the levers you can actually control, adopting the ones that work for you, and turning them into habits you can sustain for life. You cannot stop the clock. But you can change what ageing looks and feels like.

  • 01 Attitude
  • 02 Nutrition
  • 03 Exercise
  • 04 Sleep
  • 05 Stress Control
  • 06 Hormones & Genetics
  • 07 Self Care
  • 08 Love & Community
  • 09 Alignment and Consistency
  • 10 Cosmetic Presentation

Who is it for? Anyone ready to challenge the assumption that decline after 50 is simply inevitable, and start doing something about it.

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★★★★★
“Game changer….”
David A. · Verified Purchase
★★★★★
“A practical, positive and encouraging read.”
Sian Hutchinson · Verified Purchase
★★★★★
“I absolutely loved it, now part of my library to be revisited regularly.”
Andrew Zgorski · Verified Purchase

// The Framework

The 10 Tenets

These are not tips. They are a complete architecture for biological age reversal, built from two decades of personal practice, evidence-based medicine, and the latest longevity science. They work in combination. You don't pick the ones you like. You implement the system.

01
🔥
Attitude
Positivity, purpose and determination. Everything starts with WHY. Without a North Star, a specific, visceral, future vision of yourself, every other tenet collapses under pressure. Lee's is snowboarding at 80.
→ Find your North Star first. Everything else follows.
02
🥗
Nutrition
Make it work for you. Modified Mediterranean/Paleo, an 18:6 intermittent fasting window, calorie deficit, low GI, a sustainable, evidence-aligned relationship with food that works with your biology rather than against it.
→ Low carb eating reduces insulin resistance and accelerates fat metabolism.
03
💪
Exercise
Preserve youthfulness. One hour of movement, dedicated to longevity, daily, without exception. 365 days a year since 2015, this is the tenet that anchors everything else.
→ Daily movement can reverse cardiovascular age by up to 10 years.
04
😴
Sleep
Recovery super power. 7 to 8 hours, sleep environment optimisation, circadian rhythm alignment. You cannot biohack your way around chronically poor sleep.
→ Growth hormone peaks during deep sleep, poor sleep collapses it completely.
05
🧘
Stress Control
Deliberate practices. Chronic stress is one of the most potent accelerators of biological ageing known to medicine. Lee has lived this, the 2015 crisis proved it.
→ Chronic stress shortens telomeres, the biological marker of cellular age.
06
⚗️
Hormones & Genetics
Optimisation. Understanding your genetic predispositions, optimising your hormonal environment, and using evidence-based interventions, TRT, peptides, targeted supplementation, without apology.
→ Testosterone decline is not inevitable, it is addressable.
07
🛁
Self Care
Wellness beyond sleep, nutrition and exercise. The habits that hold everything else together, recovery, downtime, and giving yourself permission to actually rest.
→ Recovery isn't a reward for hard work, it's part of the work.
08
🤝
Love & Community
No man is an island. Loneliness is as damaging to health as smoking 15 cigarettes a day. This is the tenet most men over 50 get wrong.
→ Strong social bonds reduce all-cause mortality by up to 50%.
09
🐢
Alignment and Consistency
Tortoises & hares. The system only works if you're still doing it in year five. Small, aligned actions repeated relentlessly beat intensity you can't sustain.
→ Consistency compounds, intensity without it doesn't.
10
Cosmetic Presentation
You got it, flaunt it. How you show up matters, skin, posture, the way you carry yourself. Looking the part reinforces the identity you're building.
→ How you present is a daily signal to yourself, not just to others.


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// Ultra Fitness, Data & Science

The Data Hub

Biological age isn't a number you inherit, it's one you manage. Explore Lee's live biomarker data, the science of therapeutic peptides, and calculate your own biological age using the same framework.



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// The Next Generation

It Runs in the Family

Gracie, Aiden, and Sophie have inherited the focus. The health and fitness ethos Lee built isn't a personal quirk, it's a family operating system. The tenets work at every age.

Gracie
Gracie
Health & fitness lifestyle
@graciestonehouse
Aiden
Aiden
Health & fitness lifestyle
@aiden_stonehouse
Sophie
Sophie
Health & fitness lifestyle
@sophiestonehouse

"You don't slow down because you get old. You get old because you slow down."

AGING?F***THAT!

"Biological age is not a sentence. It's a signal. And every signal can be improved."

LEE C. STONEHOUSE

"The data doesn't care about your excuses. Neither does your telomere length."

AGING?F***THAT!

"One hour. Every day. Non-negotiable. Everything else in this book is built on that one rule."

LEE C. STONEHOUSE

INTRODUCTIONS & ENQUIRIES

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