It’s simple, really: Your dog needs to run and play outside and he can’t do it without you. Research shows that you might not do it without him either. A study from the Center for Physical Activity and Nutrition Research at Deakin University in Australia last year showed that both children and adults in families with dogs were more physically active than those without a family pet. And research from the National Institutes of Health has shown that dog owners are less likely to be obese. Keeping that New Year’s resolution to get fit might be as easy as indulging your child’s request for a new puppy!