Ultrarunning, Training, Running, Emilia Romagna, Heart Rate Variability.
cardiorespiratory stimulus and none of the muscle soreness. I have done this quite a few times, during long runs (e.g. 45 km with 4 big climbs @ 6–8% grade at moderate intensity) or shorter ones (e.g. 8–10 minutes all out @ 8–9% grade). To be clear, I am one of those people that can barely do a