20-min running training Walk briskly for 2-3 minutes Run at the pace obtained in the test for 4 minutes, then walk for 2 minutes. Repeat running and walking alternately for 15 minutes. Finally, walk briskly for 2-3 minutes

20-min running training Walk briskly for 2-3 minutes Run at the pace obtained in the test for 4 minutes, then walk for 2 minutes. Repeat running and walking alternately for 15 minutes. Finally, walk briskly for 2-3 minutes