Reality check: Good runners don’t just run. A good part of their training is spent on muscle conditioning. “One needs to build up different muscle groups in order to become a speedier and more efficient runner,” says Nike Master Trainer Marie Purvis.
We’re talking about your upper back, core, quads, hamstrings, glutes, and ankles. If any of these are weak, your overall performance will be affected. Try these exercise tests designed by Marie to find out how strong – or weak – your muscles are. No tools required!