High Intensity Interval Training So today we have brought you a 40 Minute HIIT Workout for your Abs it’s the Ultimate Workout for Belly Fat Loss and the best thing of all the only equipment you will require is a workout mat. If you are a beginner just take it slow and enjoy. This is a very varied workout from burpees to running on the spot you have been warned but you do, do some really great cool down exercises at the end. ENJOY Source