Marco’s app- <a href='https://www.hrv4training.com/'>HRV4Training</a> <a href='http://@altini_marco'>Marco on Twitter </a>Information on coaching- <a href='http://www.trainright.com/'>www.trainright.com</a>Koop’s Social Media Twitter/Instagram- @jasonkoop

Training Essentials for Ultrarunning 2nd Edition | Koopcast Episode 107

Coach Jason Koop covers training, nutrition and recent happenings in the ultramarathon world.

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