Some people may think they work up an appetite with exercise, but many people actually work down an appetite, according to researchers at Brigham Young University. A BYU news release reports an experiment involving 35 women that appears to prove the point. On the first day, each woman briskly walked on a treadmill for 45 minutes and then, within the hour, had their brain waves measured while they looked at 240 images – 120 of plated food meals and 120 of flowers. (Flowers served as a control.) The same experiment was conducted one week later on the same day of the week and at the same time of the morning, but without the exercise. The envelope please….the researchers found that the 45-minute exercise bout not only produced lower brain responses to the food images, but also resulted in an increase in total physical activity that day, regardless of body mass index. Wait, there’s more: the women in the experiment did not eat more food on the exercise day to “make up†for the extra calories they burned in exercise. In fact, they ate approximately the same amount of food on the non-exercise day.