How I Reversed My Biological Clock at 42

Written by Kamal Tarhini | Feb 9, 2026 7:25:10 AM

They say life begins at 40. But for me, life truly began in May 2021—the moment I finally walked away from the toxicity of the corporate grind.

Leaving my high-pressure corporate career wasn’t a strategic pivot into a quiet life. It was a rescue mission. I was 95kg, sitting at 27% body fat, and despite being only 37, my biological markers said I was a 50-year-old man.

Shortly after leaving, I found myself fighting a war on two fronts. I wasn't just "starting a business." I was attempting the impossible:

  1. Building KJTech from the ground up.
  2. Salvaging WYLD from near-total ruin.

One required the relentless energy of creation; the other required the gritty resilience of a turnaround. I realized that the "corporate version" of me—tired, inflamed, and stressed—would fail at both.

To build KJTech and save WYLD, I first had to save myself.

Today, nearly five years later, as I celebrate my 42nd birthday, KJTech is established, WYLD is thriving, and I am down to 18% body fat. My biological age is now 35.8 years.

Here is how I used my health to fuel the "impossible."

1. The Capacity to Build (and to Save)

Building KJTech demanded vision and long hours of architectural thinking. Turning around WYLD demanded crisis management, hard decisions, and emotional stamina.

To handle the oscillating stress of these two ventures, I needed an engine.

  • The Work: ~2,600 Workouts in 1,742 days.
  • The Reality: 1.5 workouts a day for nearly five years.

I didn't train this hard just to look good. I trained to keep my brain online. The physical consistency gave me the mental bandwidth to switch between "Founder Mode" for KJTech and "Crisis Mode" for WYLD without burning out.

2. Resilience is Built in the Recovery

In my corporate days, I wore sleep deprivation like a badge of honor. But you cannot fix a broken business model at WYLD if you are exhausted.

I treated my recovery as a business asset.

  • 96% Sleep Efficiency: This became my secret weapon.
  • 7+ Hours Average Sleep: I treated sleep as the most important meeting of the day.

This resilience—the ability to recover deeply so I could go hard again the next day—is the only reason I could sustain the dual workload of two companies.

3. "Nothing is Impossible"

During my corporate era, I was famous for saying, "Nothing is impossible." But back then, I felt physically defeated. I had accepted that 95kg was my "new normal."

The last five years proved that was a lie.

I applied the same "Nothing is Impossible" mindset to my body that I applied to my businesses.

  • The Business Impossible: Saving WYLD from ruin while launching KJTech.
  • The Physical Impossible: Reversing bio-age from 50 to 35.

Both required the same formula: Ignore the noise, do the work, and trust the process.

4. Living the Brand

It is poetic that the company I was fighting to save—WYLD—was a nutrition and lifestyle brand.

I couldn't just sell the lifestyle; I had to become the proof of it.

  • The Standard: Real ingredients, balanced macros, clean fuel.
  • The Result: The energy required to run two companies.

I didn't save WYLD just by looking at spreadsheets. I saved it by embodying its philosophy. I am the customer. I am the case study.

Conclusion: The Best Investment

Today, at 42, I am biologically 35.

I didn't leave the corporate world to retire. I left to regain the capacity to do great work on my own terms.

Whether you are building a tech company, saving a legacy brand, or just trying to reclaim your health, the lesson is the same: Your body is the foundation. If that breaks, the business breaks.

Live WYLD. Train Hard. Eat Healthy.