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The human body is awash with microbes, inside and out. And scientists are now discovering just how important that is for athletes.

Used to be you had to live at altitude to adapt to it. But new research suggests that by training your respiratory muscles, you can teach yourself to perform better with less oxygen.

Long shunned by endurance athletes looking to stay lean, the enemy is having a moment

To create the next wave of super-athletes, Red Bull has turned to a novel new treatment: trickling a small electric current through the brain's motor cortex. Just don't call it electroshock therapy.

Researchers are showing everyday athletes how to train their brains to perform like the pros

There's scant evidence for the effectiveness of most supplements. But here are a few to consider—and a few to shy away from.

The debate is on: just useless, or truly dangerous?

Fitness tech to measure your effort, keep you motivated, and let you know when to go hard and when to back off.

New technology has made it easier than ever to keep real-time tabs on an endless array of fitness metrics. Don't drown in the data stream.

Fact: Exercising in polluted air can increase your risk of asthma, stroke, and heart failure. But is it better than the alternative—avoiding a workout altogether?

From paddling to biking to hiking, here are the top spots from Nova Scotia to the Northwest Territories

A cardio and resistance trainer inspired by surfing motions

In our obsession with minimizing exercise damage, we may have lost sight of the reason we exercise in the first place: to force our bodies to adapt and get stronger