OK, it’s not surprising, but it’s nice to know that it’s backed up by science: exercise increases the flow of oxygen to the brain. HealthDay reports that researchers at the University of Otago in New Zealand used imaging techniques to gauge the flow of blood in the brains of women doing different types and levels of exercise. What did they find? The envelope please….When compared with their less-active peers, women who exercised most days of the week had more oxygen circulating in the frontal lobe, the part of the brain that helps us make decisions and retain memories. Like remembering to exercise.