The Specifics Behind the Fartlek Workout

Most people who exercise on a regular basis have heard of interval training and the positive impacts it can have on the body; however, not many people have heard of the fartlek workout. Although these two terms are closely related, most people probably just throw away the fartlek training workout as something with a funny [...]

Source: http://www.fitnesshealthzone.com/exercises/fartlek-workout/

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