15 Minutes of Exercise Per Day Adds 3 Years to Life, Study Finds

A little exercise goes a long way, a new study suggests. So little that 15 minutes of it per day reduces one's risk of cancer and adds an average of three years to a person's life.Taiwanese researchers examined more than 400,000 study participants in a 12-year period, where patients self-reported their weekly exercise regimen and were then placed in one of five groups: inactive, low, medium, high