In recent years, the potential benefits of running and intermittent fasting became a talking point in certain fitness circles. Some of the theories sounded plausible: A popular one is that sometimes training in a fasted state can nudge your body to rely more on fat as fuel. There’s also something to be said about developing an eating routine that frees you of digestive and gastrointestinal issues while out on a run. But as writer and runner Alex Cyr explains, there’s far more to lose than to gain from such a habit. This week, he unpacks the reality of restricted eating and what it could lead to for endurance athletes. Read more.

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