The 5 Essential Elements of An Endurance Training Program That Most Athletes Neglect: Part 1 – Strength. (http://www.bengreenfieldfitness.com/2013/04/strength-training-for-endurance/)
Underground Training Tactics For Enhancing Endurance – Part 2. (http://www.bengreenfieldfitness.com/2013/04/how-to-increase-endurance/)
_________________Ben Greenfield Fitness
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