HIIT exercises that people of all fitness levels and ages can try are: Jump squats, Burpees and Burpees. Abdominal exercises can help to combat belly fat. Perform one activity for 30 seconds, then rest for another 30 seconds before moving on to the next activity. When you finish all the activities, you can repeat the cycle a few more times. The sequence can be repeated a few times to get the maximum benefit. Some exercises are jumping jacks, burpees, push-ups, deadlifting and high-knee squats. These routines aren’t very time-consuming but still get your heart pumping and work your entire body.