Jason Karp

Calf Muscles

I once dated a girl who had a thing for my calf muscles. Seriously. Calf muscles. She may have been on to something. Did you know that the energy cost of calf muscle contraction in highly trained runners is nearly 25% of the total metabolic cost of running? In recreational runners, it’s 40%. That’s a …

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REVO₂LUTION RUNNING™ ANNOUNCES PARTNERSHIP WITH INTERNATIONAL SPORTS SCIENCES ASSOCIATION

SAN DIEGO, CA – REVO₂LUTION RUNNING, the leading running certification program for coaches and fitness professionals, today announced its partnership with the International Sports Sciences Association (ISSA), the world leader in fitness education and certification. With this partnership, ISSA owns a minor stake in the company and adds to its impressive product line, offering the …

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