In every yoga class that we teach at Dogwood Studios, we mention the importance of keeping our spine healthy. Osteoporosis is a silent disease. You can not feel when your bones get weaker. So much so that people often don’t realize they have low bone mineral density (BMD) until a bone breaks. The National Osteoporosis Foundation reports that the disease is responsible for an estimated two million broken bones per year. One in two women and up to one in four men over age 50 will break a bone due to osteoporosis.