Live longer.
Get stronger.
Measurably better.
Personal online coaching for health, fitness and longevity – for expats and English speakers living in Germany. Your plan is built from your goals and your data, and measured against them. Developed by a sports scientist.
Felix Burkert
- B.Sc. Sports Science (Technical University of Munich)
- Fitness Trainer B Licence (Technical University of Munich)
Your coach
Hi, I'm Felix.
As a sports scientist and fitness trainer, I saw that many coaching programmes rely on rigid templates and gut feeling, or are opaque and hard to access. That's why I founded Optenas: coaching built on systematic measurement and a plan made for you.
My recommendations follow the guidelines of leading scientific bodies such as the WHO, the American College of Sports Medicine (ACSM) and the German Nutrition Society (DGE), combined with current research and your individual needs.
The rest of this website is in German – your coaching doesn't have to be. Calls and messages are in English.
How it works
Measure first. Then coach.
Your coaching starts with a thorough analysis. Every decision in your plan is based on it.
- 01
Free intro call
30 minutes, no obligation. Write me an email and we'll find a time to talk about your goals and whether we're a good fit.
- 02
Lifestyle Analysis
Over one week, four areas are measured: daily life and activity, nutrition, fitness, and heart rate variability for stress and recovery. The measurement kit with a heart rate monitor is sent to you by post. You receive a detailed personal report.
- 03
Your plan
From your results, I build a prioritised plan that fits your everyday life: training, nutrition, sleep, stress and recovery.
- 04
Coaching & check-ins
Regular calls and check-ins keep you on track. Re-analyses show in black and white what's working, and your plan is adjusted whenever your life changes.
Packages · 100% online
Choose the support that fits you.
Every package includes an extra onboarding call to prepare your next steps.
Basis
The structured foundation. Your individual plan, continuously optimised.
Lifestyle Analysis charged separately (€199).
Founding offer: 2 analyses at no extra cost.
As a founding client: €103 / month
Plus
Close support. Regular contact with your coach and discounted Lifestyle Analyses.
Lifestyle Analysis at a reduced price.
Founding offer: 2 analyses at no extra cost.
As a founding client: €223 / month
Premium
Maximum support. Daily monitoring and close contact with your coach.
Quarterly Lifestyle Analyses included.
As a founding client: €439 / month
No VAT is charged (small business exemption under § 19 UStG).
All packages come with a 30-day money-back guarantee – no risk, no small print.
Founding offer · limited spots
The first 7 clients save 20%.
Optenas is new, and the first clients benefit most. As a founding client, you get 20% off every coaching package (€103 / €223 / €439 per month). Your price is guaranteed for 12 months from your start, and your initial analysis and the re-analysis after about three months are included at no extra cost.
Not ready for coaching yet?
Find out where you stand.
The Lifestyle Analysis is also available on its own – the same detailed report every coaching client starts with, including your biggest levers and concrete first steps. No subscription, no obligation.
- All 4 modules fully evaluated
- Personal data report
- Measurement kit by post: heart rate monitor (on loan) and all instructions
- One-off payment, no obligation to continue with coaching
- 30-day money-back guarantee
Lifestyle Analysis
30-day money-back guarantee
No VAT charged (§ 19 UStG)
If you start coaching within 8 weeks, the analysis counts as your baseline.
Good to know
Questions from English speakers.
No. Coaching calls and messages are in English.
Next step
Let's talk – in English.
Not sure which package is right for you? Write me an email and we'll arrange a free 30-minute intro call. No pressure – afterwards, you decide whether and how to continue.
Free and without obligation · Reply within 24 hours