In our book The Secret of Running we explained the power of the 4 energy systems of our human motor. The table below gives a summary of the maximum powers that are theoretically feasible with the world best athletes. First, we refresh for you what energy systems our human engine possesses and the fuel we have in the process. We conclude with a consideration...

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We are impressed with Stryd’s Race Calculator. Last week we published Ron’s experience at the Berlin Marathon. As we all know, it was hot in Berlin which caused many runners to run a lesser time, including Kenenisa Bekele (2:06:47 versus 2:01:41 in 2019, so 4% slower). We noticed in the evaluation of Berlin that Stryd’s Race Power...

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Nike ZoomX Vaporfly Next% 2 (Nike.com) We recently received the following interesting question from one of our fans, namely Eddie : “I am happy to read your articles.  Read some articles about the Stryd and the Nike Vaporfly.  The Vaporfly is about 4% more efficient than a regular shoe. I myself use the Asics Nimbus. My Critical Power is 324...

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Two weeks ago, the Dutch media reported that Addie van der Vleuten from Best, the Netherlands ran the Pieterpad-trail in 78 hours and 10 minutes. That makes him the fastest ever! The Pieterpad is the most famous long-distance trail in the Netherlands. The path leads from Pieterburen on the North Groningen Wadden coast to the Sint-Pietersberg in South...

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In theory, there is no difference between theory and practice, in practice there is… This tile wisdom once again turned out to be completely correct. What was the case? It turns out at the end of this story. Last week we discussed the successful 033 Strava Circuit,  a by many appreciated virtual Corona running event. In the meantime, the organization...

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