on a regular basis may positively influence an individual's productivity at work, or in the case of a student, influence their ability to pay attention in class,” he said.
Cardinal said past studies linking physical activity and sleep used only self-reports of exercise. The danger with this is that many people tend to overestimate the amount of activity they do, he said.
He added that the take-away for consumers is to remember that exercise has a number of health benefits, and that can include helping feel alert and awake.
“Physical activity may not just be good for the waistline and heart, but it also can help you sleep,” Cardinal said. “There are trade-offs. It may be easier when you are tired to skip the workout and go to sleep, but it may be beneficial for your long-term health to make the hard decision and get your exercise.”