Perform as many rounds in 25 minutes! Rest as needed, but challenge yourself.
All you need to perform this workout is yourself, a pair of running shoes and a nearby hill! Your uphill sprints should be so hard that you think you might almost make it..
Repeat for 6-8 rounds.
Finish with a 5-minute cool down — jog regressing into a walk after the last sprint set. Make sure to stretch after this grueling workout.
Repeat 2-3 rounds then do a 2-3 minute cool down.