You might be familiar with the 80/20 method – the idea that you should do 20% of your running workouts at a high intensity (whether that’s interval training sessions or different variations of ...

Many runners believe their natural stride could be improved. Here’s what to know before trying to change yours. By Christine Yu Want to get better at tennis? Fine-tune your serve. Swimming? Perfect ...

Over years of running, inefficiencies can creep into your stride. Often, an injury changes the way you run. Or maybe one leg has become stronger than the other for some reason, or you've started ...

In 1996, I spent 2 months training at 10,000 feet in Toluca, Mexico. My gracious host was two-time New York City Marathon champion German Silva. (If you think German is a fast runner, you should see ...

The 5 x 5 is a simple speed workout you can repeat through a training block without overthinking it. Coach and writer Mario ...

In 2011, two years after his book Born to Run launched the barefoot boom, Christopher McDougall offered a clarification. “The ‘one best way’ isn’t about footwear,” he wrote in The New York Times ...

Meredith Dietz is Lifehacker’s Senior Staff Writer. She earned her bachelor’s degree in English and Communications from Northeastern University, where she graduated as valedictorian of her college.