This news from the Canadian Pediatric Society conference held in Victoria, British Columbia, at first glance may seem surprising. Exercise helps one lose weight, right? Well according to this analysis of studies of school activity interventions done on 10,000 children in BC comparing Body Mass Index (BMI) before and after the intervention, there was no change in BMI, even in the studies where the activity interventions lasted three years. The studies analysis did show improvements in health measures like blood pressure, bone density, aerobic fitness and range of motion, but none of the studies showed a drop in bodyweight. This follows on the heels of another study done on 900 teens in grades 10 to 12 in the Vancouver area studied by researchers at University of British Columbia and McGill University in Montreal, who found “… there appeared to be no link between body mass index (BMI) values and levels of physical activity”