Yes — but not in the way most runners expect. It improves running economy, not your engine, and the bigger benefit may be the weeks of training it saves.

Six movements. Everything else is a variation on one of them or a distraction from all of them — and the distractions are what fill most runners' gym sessions.

Twice a week for almost everyone. The interesting part is what to do when that is not possible — and why the gym is the first thing runners drop at exactly the point their bodies need it most.

The most reliably neglected part of a runner's week, and the one with the clearest evidence behind it.