Every strenuous exercise involves some mixture of suffering and pleasure. The key to sticking with it is getting the balance right. By Alex Hutchinson Katy Kennedy’s first attempt to develop a running ...

Add Yahoo as a preferred source to see more of our stories on Google. Jordi Salas / Moment via Getty Images Do you need a little motivation to make your daily trek to the gym? Are you finding working ...

If you work out regularly—or even just once in a while—you’re probably familiar with hitting “the wall.” Hitting the wall can happen when you’re out for a jog and finishing the rest of your planned ...

Many runners find pushing themselves in training and racing as one great source of enjoyment for the hobby, which is why once a month in our Runner’s World+ member newsletter we describe a quality ...

Here’s a graph showing the fraction of workout time spent at above 90 percent of max heart rate (black bars) and above 90 ...

It’s natural to think that, the harder your workouts are, the faster you’ll race. It’s also wrong to think that. I’ll illustrate this idea with some personal history. When I ran at the University of ...

If you’ve ever glanced at your smartwatch mid-workout and wondered whether your heart rate is impressively low for how hard ...