She recommends finding an athletics track, a flat pavement ... “People always associate sprinting with set distances of 100 or 200 metres. But in my training we do distances from 20, 30, 40 ...

try this sprint/jog workout every minute on the minute (EMOM). Run 100 meters fast, then turn around and jog 100 meters back to the starting line. Depending on your speed of running and jogging ...