Want to blow away your belly without logging months of mind-numbing hours on the treadmill? High Intensity Interval Training (HIIT) will kickstart your metabolism like no other workout, burning more than twice the calories as a lighter and longer session, according to a study from Southern Illinois University. And the total amount of time you need to dedicate to HIIT: 20 minutes. It really is the least time exercising for the biggest results.


The following workouts are simple to follow, just not very easy to do. For each major muscle group, after following the HIIT 100s protocol on your first exercise, you'll do three more sets to failure of the same exercise using your 10-rep max (10RM). Of course, after doing 10 sets of 10 reps, you'll no longer be able to complete 10 full reps with your 10RM weight—probably more like 5-7 reps. On the third set, you'll do a dropset with the same weight you used for HIIT 100s (50% of your 10RM) and do as many reps as possible.
Arteries (are-te-rease): The blood vessels that carry oxygen-rich blood away from your heart for delivery to every part of your body. Arteries look like thin tubes or hoses. The walls are made of a tough outer layer, a middle layer of muscle and a smooth inner wall that helps blood flow easily. The muscle layer expands and contracts to help blood move.
Real talk: It could take weeks or months to see the metabolic effects of exercise on the scale, and even then, building muscle, which is denser than body fat, could lead to weight gain. "Do what you like because it’s good for you," Dr. Seltzer says, noting the way exercise is awesome for your heart, mental health, and more—and that not all measure of progress can be seen on the scale.
High intensity interval training, or HIIT, is a type of training that involves short bursts of high-intensity intervals of exercise combined with lower-intensity intervals. One example is all-out sprinting for 30 seconds between 60-second jogging sessions. One workout would involve five to 10 of those high-intensity cycles. This type of workout is designed to burn large amounts of fat in a short period of time.
This question is on so many minds: how can I lose belly fat...and fast? While there's no magic formula of food and exercise to reduce belly fat with the snap of your fingers, there are nutrition choices, exercises and lifestyle changes that can help. Here's your guide to understanding exactly what belly fat is and how you might be able to reduce it over time.

When most people think of HIIT they think of it as applicable only for cardio, yet it can also be used in weight training. After all, weight training itself is a form of HIIT—you do a set with all-out effort, rest, then do another set, rest, and repeat. Resting two to three minutes between sets, however, is too long for a training session to be considered an effective form of HIIT. But all you have to do is shorten rest periods and you're doing a kind of HIIT that burns fat.


The researchers explain that people who cook their own meals may simply have other good-for-you habits, like exercising more. However, they also concluded that home cooks ate more fruits and vegetables (along with a wider variety of foods), have healthier methods of prepping their food, and splurge less on foods high in calories and sugar. No clue where to start? Check out these 25 high-protein chicken recipes for weight loss.
"Only doing abdominal-focused workouts, like crunches, won’t help you banish the bulge. Belly fat is simply where your body stores energy, so you need to take a whole-body approach to tackle it. HIIT training (high intensity interval training) is a great way to burn fat and get your heart rate up. Squats, burpees and treadmill sprints are all examples to try."
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