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.
15 Best Foods for a Flat Belly. For a slim tummy, fill your plate with foods that speed up metabolism and reduce bloat. Eat your way to a flatter belly. When you're trying to slim down your stomach, core exercises and ab workouts go a long wayâbut what you eat also plays a huge role. In addition to drinking enough water, eating fresh produce and healthy fats, and avoiding notorious belly-busters (think alcohol, soda, and sugar), certain foods are particularly good for shrinking your gut.