Fatigue

How to distinguish between fatigue and boredom, and ideas for restoring your mojo.

Recovery runs actually don't help you recover—but they're still worth doing for their training benefits.

More than half of all athletes will overdo it at least once in their running career. Use these tips to recognize subtle signs that you're approaching overtraining.

New research suggests keeping training enjoyable is more important than you might think.

There are warning signs to look for, and they must not be taken lightly.

The next time you bonk, blame your brain—not your muscles.

Why are low iron levels so common in runners?

A fascinating study proves that fatigue in endurance is nothing more and nothing less than quitting.

It's worth finding a doctor who understands the intricacies of cholesterol, thyroid hormones and iron.

Learn how to identify the issue and take the right steps to get back on track.

Routine and a good sleep environment can help you get to sleep, combat insomnia, and deal with pre-race anxiety.

Overtraining can bring running performance to a halt.