When running, most of us face two challenges: our heart and lungs (conditioning); and our leg stamina. Either your “lungs or your legs” will tire during the running workout, and depending on the speed ...

We’ve all been there: You’re on the starting line of a race feeling fresh, excited, and ready to show that race who’s boss. So you take off—like really take off—and halfway in, you realize you made a ...

A first-time half marathon runner should not run the same 400-meter workout as a pro miler. But the one-lap framewo ...

Lindsey Ellefson is Lifehacker’s Features Editor. She currently covers study and productivity hacks, as well as household and digital decluttering, and oversees the freelancers on the sex and ...

As a coach, I see it a lot: people who want to be trained for specific goals: a magic number like 3:00 for the marathon, a Boston qualifier, an Olympic Marathon Trials qualifier—whatever. But they don ...