For years, step counters and fitness apps have treated every step as equal, whether it comes from a quick dash to the copier or a steady hour on the trail. Emerging research is now challenging that ...

The view is spectacular as I hike the steep, stony path up Yr Wyddfa, or Snowdon. I stop to breathe in the crisp mountain air with its faint tinge of honeyed heather and to appreciate the silence.