Peak flow demonstrates how quickly you can blow air out of your lungs. The peak flow meter is marked so you can determine how much air you can blow out. The better your asthma is controlled, the more air you will be able to blow out.
[T]he data show that the main constituents of a healthy brain diet include fruits, vegetables, legumes, nuts, fish, lean meats, and healthy fats such as olive oil, Jacka told Scientific American.
(Don't laugh, we'll get to that.) In fact, there are a number of healthy foods to eat for brain power. Some may help in the short term; others, you should include in your diet for long-term aid in boosting alertness, concentration, and performance. Of course, the best approach is to maintain a healthy diet overall. If you're eating poorly and think you'll have a snack and go in and take a test and do well, you're fooling yourself, says Elizabeth Somer, author of 10 Habits That Mess Up a Woman's Diet.