Build muscle mass without
strict diet?

I am leading you, as a male athlete, to a transformation with more muscle mass without a strict diet or long workouts.

Start building muscle today on the long term. Geen quick fix, maar zichtbaar resultaat for always met mijn Flexibele Methode. 

helped people

Clients helped

training program

Created training programs

Personal training

Hours of personal training delivered

My transformations

Luuk Rietveld

Build muscle mass forever, maintain lifelong health!

It's all about achieving long-lasting results so that you in the long run make physical and mental progress. It is an investment in yourself, but you will achieve results inside and outside the gym. Thanks to more muscle mass:

My Flexible Method

"Flexible = means, consistency = goal."


We go for it together continuous changes in the field of mental and physical fitness.

Flexible method for muscle mass


Gain knowledge through Understandable language, making it applicable in practice. Prevent injuries!

Flexible nutritional plan

Take your calorie needs into account and learn to eat accordingly feeling immediately flexible diet.

Efficient workout

Train efficiënter, niet langer! Met gerichte trainingen, afgestemd op jouw lichaam, behaal je resultaten in minder tijd.


To persevere during slower periods, due to intrinsic motivation for the gym.

Progress registration

Easy tracking of your progress and every week better want to be in a training.


Developing a lifestyle in which weight training & health be present in the long term.

Illuminating online video library with
100+ self-made fitness instructional videos for muscle building*

*Half is visible on my YouTube account.