1-on-1 · By application

Operate like the founder
your business needs.

Private mentoring for founders, mind and body, built on real data, not guesswork.

Apply for a conversation →
Lennart van der Ziel
Why

To take your business to the next level, you have to reach your own highest level first.

I help you turn your health and mindset into your competitive advantage.

How it works

Assess. Plan. Coach.

Real health data being collected
1

Assess

A full intake into your lifestyle and health, with multiple real tests. No guessing where you stand.

Lennart reviewing the data
2

Plan

A specific plan for your body and mind, built around your business.

Lennart speaking on stage
3

Coach

Ongoing 1-on-1 coaching. We measure, adjust, and keep raising the bar.

What to expect

The results.

+Double your energy and focus
+Boost hormones and longevity
+A mind that matches your ambition
+Explosive growth in business and life
In the room

Working with founders.

Lennart with a client
Lennart with a client
Lennart with a client
Lennart van der Ziel
Your mentor

Lennart van der Ziel

Former tech CEO200k+ products sold100+ founders guided

As founder & CEO I built Travis the Translator, named Dutch Startup of the Year, with 200,000+ devices sold worldwide. I carried the weight myself: the stress, the bad sleep, the decisions made on empty. I learned it the hard way, so my clients don't have to.

Today I mentor founders on performance, body and mind, using real data, not motivational talk.

Proof

What it does for them.

MATEJ · ECOMMERCE FOUNDER

Lennart with Teodora Sklayne

“As a personal trainer, I've looked after my health for 15 years, but only in the last two did I go deeper into optimisation. The data and protocols from Lennart helped me understand the pieces I was missing. I'm following my personalised supplement protocol, and it's already improving my sleep and giving me more energy. I thought I needed more discipline and to be stricter with myself. In reality, I needed more recovery and to be kinder to my body, and that pivot is making a huge difference to my health, long term.”

TEODORA SKLAYNE · OWNER, ATTIKA FITNESS BARCELONA

Is this you?

This is for founders who

✓You know you're the biggest lever in your business.
✓You want to operate at your A-game, body and mind.
✓You want decisions based on data, not guesswork.
✓You want a mentor who's carried the founder weight himself.

Request a conversation.

A short, personal call to see if this is the right fit. No pitch, no pressure.