Thanks to the L.A. Times for this excerpt from the CDC’s The State of Aging and Health in America, 2007, showing the slow but steady decline in activity with age.
Here’s a percentage breakdown of those who say they get no leisure-time physical activity:
Age 18-29: 19%
Age 30-44: 22%
Age 45-64: 25%
Age 65-74: 28%
Age 75 and older: 36%