Loss of flexibility isn’t necessarily a bad thing. Ok, maybe don’t stop altogether, but you don’t need as much stretching while training as you may think. One of the more interesting effects of run training is reduced flexibility in the joints of the lower legs. In a word, the more you run, the harder it is to touch your toes. Flexibility is generally thought of as a good thing, and therefore the loss of flexibility that results from running has generally been thought of as a bad thing. But think about it: Why would running cause a physiological adaptation that …
