A new study confirms once again that our weight has a lot to do with our health. Not only can obesity shorten your life, but being too thin can, too. Optimum health comes when we keep our weight in a safe middle range. Doctors determine too fat and too thin by a math formula called Body Mass Index or BMI. There are a lot of calculators on the Internet to plug in your height and weight and find out how you are doing. It’s important to find out if you want to stay healthy. To encourage you, here is a free download of the HealthRock song “BMI.” To get yours, go to www.HealthRock.com/podcasts.