Still haven’t mastered sitting still despite decades of admonishments? You likely have a healthier Body Mass Index (BMI) because of it, according to James Levine, MD, a physician at the Mayo Clinic who researches the relationship between non-planned movements and weight. One study by the Mayo Clinic tracked the movements of 10 obese and 10 lean individuals. Researchers found that the leaner people, on average, moved for 150 minutes more a day and burned 350 calories more. But the “exercise” wasn’t intentional—the individuals were just more likely to stand up, bounce a knee, or move around in their chair.