In my eBook FASTING FOR MANAGERS I share my knowledge and personal experiences from 25 years occasional fasting at least once or twice per year. Until I finished this eBook the longest fasting period I made was 30 days which I have done a few times during normal work conditions which means for me daily 10 to 14 intensive working hours with little break times. When writing my eBook I did a 50 days & nights fasting to prove that it is harmless, riskless, that it does not hamper your working but boosts your energy & stamina! Since then I did same 50 days & nights fasting periods in 2021 and 2022. In my eBook FASTING FOR MANAGERS I address healthy people and in particular those big guys and girls out there who would like to change the shape of their appearance in a natural, harmless, riskless way which is even fun!

Through the following link you access a short biography about the author Jens Kehrhahn published on Amazon: