Author: Henk Kraaijenhof

It seldomly happens during the career of athletes that they have only one coach from start to the end of their career. The change of coaches can have natural reasons such as: within the structure …

We might think the following is obvious, if we become 75 years old, we will have spent 25 years sleeping. Well, we sleep a little less nowadays since it seems that our hyperactive society is …

Despite the Covid-situation I am quite busy, keeping athletes motivated and training well, coaching, writing more, maybe another book rather soon, and of course, reading and studying. People who know me, also know that I …

Na 20 jaar testen en adviseren van vele individuen met verschillende achtergrond, topsporters, SF operators, politieagenten, ambulance personeel, artiesten, CEO’s, managers, en mensen zo als u en ikzelf, heb ik mijn ervaringen samengevat in dit …

In case of supplementation for supporting sports performance, these three amino acids certainly deserve attention: arginine, ornithine and citrulline. These three are structurally and functionally related, let’s say cousins. Research about the use of amino …

One of my favorite movies, when I was a lot younger, was “Goldfinger” after the book by Ian Fleming, especially the scene where the crook Goldfinger is preparing to kill my hero by cutting him …

I have decided to write a small series about performance enhancement in elite sports. Enhancing performance is not an easy task in elite sports for several reasons. In many sports an athlete has to train …

Who will miss us? Apart from the bad news this Corona-situation brings, there is also positive news. What is becoming perfectly clear is how fragile our social and political structures are and how the current …

“May you live in interesting times” funny enough a Chinese wish, and yes, they were right: we do live in interesting times. A lot of people ask me what I think about the situation and …

Due to a typo someone made in the process of protecting my blog yesterday, a strange warning appeared instead of my blog. Don’t worry, nothing happened, problem solved.