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The precise mathematical formula you need to train for a marathon.
Go off road with these seven tips from pro endurance athletes.
The same protein that helps you run fast also makes you smarter.
What to eat and drink during a race—from 5K to Ultramarathon.
The mental trick that can help you exercise longer.
Michael admits one race challenge weighs heavily on his mind.
Michael underlines the importance of balance in all facets of training.
Mark purchases a spear to work on his throwing technique.