This is part 3 of a 5 part Tabata cardio combo routine from Suzana of BodyRockTV.
Workout #3 is alternating jump-lunges! Warning: if you have weak knees than you may want to just do simple lunges without the jump when alternating between the left and right leg.
Its only 4-minutes, but after the first 2 minutes it will feel like an hour! This is a great cardio-routine that can be done anywhere. All you need is a Tabata-timer and 4-minutes!