Interval training workouts have shown to be the most effective cardiovascular training method for improving cardiovascular endurance, sport- specific performance, boosting metabolic rate and burning fat!
INTERVAL WORKOUT 1:
Interval training protocol: 10 sec @ 100%: 30 sec @ 60% x 18 = 12 minutes
This running workout is probably easier to do outside instead of on the treadmill. The reason - most treadmills take too much time to adjust to the speed you cho...