You have more than 600 muscles that help you do everything from move your body to breathe and stay alive. Learn how to keep your muscles healthy.| Cleveland Clinic
Body mass index (BMI) is a screening tool that measures the ratio of your height to your weight to estimate the amount of body fat. It’s not always accurate.| Cleveland Clinic
Cleveland Clinic advertising supports our core mission and helps us improve our site as a resource for trusted health content. Learn how to advertise with Cleveland Clinic.| Cleveland Clinic