Karsten Schellenberg is a former top athlete and has now twenty years of professional experience as a fitness coach. He sees himself basically as a motivator, someone who sounds out the individual power limits and tries to exploit to the full the physical abilities of the person, without neglecting the health side. Karsten Schellenberg not only provides his clients with innovative nutrition plans, relaxation therapies and unconventional training concepts, but also practices these himself. Among his clients are Franka Potente, Reamonn, Wolfgang Becker, Clemens Schick, Janine Habeck und Detlef D! Soost.

Karsten Schellenberg participates in tv and radio programs , such as taff on ProSieben, Sat. 1-Frühstücksfernsehen, rbb zibb, Radio Fritz and N-Joy Radio.