They're painful but also magical, relieving the post-workout soreness that afflicts so many athletes. But do they really aid recovery? Increasingly, the evidence says no.

On some gut level, you already know that trends like “raw,” “alkaline,” and the “warrior diet” are useless—harmful, even. The key to not falling for them? Think macro.

The herb offers a caffeine fix similar to that of coffee, plus vitamins and other beneficial plant compounds. But you have to get over the hay-like smell, wood chip taste—and potential health pitfalls.

Microbes are now being hawked to athletes to prevent sickness and improve recovery. We talked to several experts to separate hype from fact.

Runners who do intense workouts on no carbs tend to experience weakness, fatigue, and poor performance. But a new strategy called “sleeping low” might give athletes the same edge—without the suffering.

Our national parks are getting louder, and it's affecting both the wildlife and our health.

Think breakfast helps kick-start metabolism and boosts weight loss? These are widely believed myths not supported by evidence, scientists say. But breakfast does deserve high marks for increasing physical activity.

Some full-grown athletes are turning to breast milk—yeah, you heard us—for an energy boost and protein push. If you're thinking there's something wrong with that, you're right.

You’ve been told that gluten-free diets are a fraud, that the science is settled, and that it’s all just the placebo effect. If so, how can the anecdotes be explained? Enter FODMAPs, the underappreciated forms of sugar that may just underpin your wheat, rye, and barley intolerance—and unlock your fitness potential.

The hit documentary Fed Up is the latest in a litany of articles and documentaries to portray sugar as dietary villain number one. But what if sugar isn't the enemy—and by focusing on its effects, we've ignored the biggest causes of our health crisis and even subverted athletic performance?