A study by University of Pennsylvania provides new insight on specific types of activities that help to improve sleep quality. Participants were asked what type of physical activity they typically do and how much sleep they got in a 24-hour period. All activities except for household/childcare were associated with a decreased likelihood of not enough sleep, as compared to those who didn’t perform any physical activity in the past month.  Specifically, walking, aerobics/calisthenics, biking, gardening, golf, running, weight-lifting and yoga/Pilates were each linked to fewer cases of insufficient sleep, while household chores and childcare were associated with an more cases of insufficient rest. Findings suggest that those who exercise by walking are more likely to have better sleep habits, and that higher-intensity workouts like running and yoga are even better.