Polarized training is based on a clear 80/20 distribution: 80% of your training at low intensity (max HR 65–75%) and 20% intense (at or above the anaerobic threshold), while the middle zone is largely ...

Runners all have different goals. But one goal that’s common for all is running for an entire race or workout. Sometimes that means shaving a couple of seconds, or perhaps minutes, off their current ...

Sometimes you need to be uncomfortable to get comfortable.