2. Zone 2 endurance building "It’s a bit Marmite, but there’s nothing more I love than an easy Zone 2 long run on a treadmill," Nathan Dyke, fitness instructor at Barry's, said.

A key benefit of cross-training is injury prevention —via strengthening muscles, bones, and ligaments that are important to running. Activities like strength training or lower-impact cardio ...

With the steady roll of the treadmill, I assumed I’d hop on and cruise at seven miles per hour (the pace for an 8:37 mile) indefinitely. Five minutes in, I was checking the clock every 30 seconds.

Here’s how to use running intensity to help you meet the demands of your training plan without overdoing it. By Monique Lebrun Published: Jul 17, 2025 11:45 AM EDT Save Article Listen (9 min) ...