Older adults were 67% less likely to die of any cause if they were moderately or vigorously physically active for at least 150 minutes per week, compared to people who exercised less. Women with an average age of 79 who walked 2,100 to 4,500 steps daily reduced their risk of dying from heart attacks, heart failure, stroke and other cardiovascular diseases by up to 38%, compared to women who walked less than 2,100 daily steps.