"Pupil Dilation: The Window into Your Brain's Functionality"

The size of your pupils during light exercise may indicate the cognitive boost you receive from physical activity. Researchers in Japan monitored pupil size and brain activity in participants during light exercise and found that the more the pupils dilated, the better the cognitive boost. This suggests that pupil-linked neural activity is a potential mechanism by which exercise enhances executive function. While the study is limited and further research is needed, it provides insight into the connection between our eyes, brains, and the benefits of exercise.