There are different types of HIIT but an easy one to begin with is to simply warm up for 3 minutes on an elliptical machine or by walking. Then work out for 30 seconds so that at the end of the exercise you feel satisfied. Reduce the speed to slow down to a moderate pace. Do this 7 more times or for total 8 intervals. Start with one interval and as your body is ready to take more increase the intervals. Studies show that HIIT to be the absolute premier cardio for weight loss and optimal health as compared to longer, traditional cardio.
At its core, burning fat comes down to the process of lipolysis—the breaking down of fat lipids, explains Seedman. This happens in the mitochondria of the muscles, or the powerhouses of the cells, responsible for generating the energy our cells need to do their jobs. Exercise has been shown to improve mitochondria function, which then promotes fat breakdown, Seedman adds. Plus, working out helps regulate pretty much all the hormones that optimize fat loss.