Part of the Interval Training program.
This workout has never been performed.
Interval training, high intensity for set periods with a limited rest.
Interval run, run for a set period of 1-5 minutes then rest for 1 minute. Work your ratio from 1/1 up to 1/3 or 1/5. Perform the intervals in sets to total 30 - 40 minutes. Track your heart rate...