The 4-minute tabata workout has been studied...
And found to be equally or even more effective than doing moderate cardio for 60 minutes.
That's right: a 4 minute tabata training workout that works BETTER than doing an entire hour of traditional cardio.
Read the article: http://strongerleaner.com/tabata-training-workout/
Watch the workout: https://www.youtube.com/watch?v=VNNvulWsHAU