What is a peak expiratory flow rate test? The peak expiratory flow rate (PEFR) test measures how fast a person can exhale. The PEFR test is also called peak flow. This test is commonly performed at home with a handheld device called a peak flow monitor. For the PEFR test to be useful, you must keep continuous records of your flow rate.
Get more fiber in your diet. Soluble fiber (such as that found in apples, oats, and cherries) lowers insulin levels which can speed up the burning of visceral belly fat. 1  Add fiber to your diet slowly. 2  If you are currently getting 10g of fiber a day, don't jump to 35g of fiber the next day.
And it's also true that you won't lose fat from your abdominal area just by targeting your abs with crunches or other abdominal exercises. To lose belly fat, you have to reduce your overall body fat. While running can help you lose fat, you'll have a lot more success by combining it with a healthy, low-calorie diet. And, even then, your genetics determine what areas will lose the fat first. Strategies for Losing Belly Fat.