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.
For more flat-belly foods, click here. Foods that Burn Belly Fat. Eat more monounsaturated fats, easily remembered as MUFAS, found in nuts, olive oil and seeds. Other fat burners include avocados, green tea and whole grains. Put them on your grocery list, and keep your fridge full and your body running on these healthy sources of energy.