Source: US News (Health)
Winter sports and snowy day activities provide lots of exercise and fun, but there's also the risk of injury, an expert warns.
More than 700,000 injuries are reported each year in the United States due to sledding. More than 30 percent are head injuries, caused by collisions," Dr. Daryl O'Connor, an orthopedic surgeon who specializes in sports medicine at Gottlieb Memorial Hospital.