WHEN I FIRST started running long distances, I had one goal: go as fast as I could for as long as I could. I ran the same 5k route a few times a week, always aiming to go faster. Every time out needed ...

The question at the heart of a lot of running science journalism is the same one that animates fawning celebrity profiles: “What is it that makes you so gosh darn wonderful?” To be fair, it’s a ...

Our bodies need fuel for everything, even when they’re not in motion. But when it comes to fuelling them for running, things become a little more complicated. Giving your body what it needs, just when ...

Add Yahoo as a preferred source to see more of our stories on Google. WHEN I FIRST started running long distances, I had one goal: go as fast as I could for as long as I could. I ran the same 5k route ...