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Scientists say you may be able to get it without exercise—one day.
Just make sure you try these on a stationary bike.
The average 5K time for men, plus other key running stats.
The precise mathematical formula you need to train for a marathon.
Go off road with these seven tips from pro endurance athletes.
Research shows how testosterone affects marathon times.
What to eat and drink during a race—from 5K to Ultramarathon.
The mental trick that can help you exercise longer.