Ultrarunning, Training, Running, Emilia Romagna, Heart Rate Variability.
intimidating. I ran very consistently, 6 days per week, 130–140 km per week, for many months. However, I was also getting slower and slower, accumulating niggles, and being unable to do proper workouts or feel good at the end of long runs. Last year, I still wanted to keep up a decent volume, as I