<https://officercandidatesschool.com/2013/01/14/10-20-30-training-concept-to-run-faster-by-running-less/#article>
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"OCS Preparation Workouts, PFT, 10-20-30 running program, 10-20-30 running training concept, cholesterol, Department of Exercise and Sports Sciences, emotional well-being, fitness, Jens Bangsbo, Journal of Applied Physiology, PhD student Thomas Gunnarsson, physical training, Professor Bangsbo, pt, rest, run, running, running program, running training program, University of Copenhagen, working out"
<https://officercandidatesschool.com/2013/01/14/10-20-30-training-concept-to-run-faster-by-running-less/>