Strength loss starts as early as age 30. When you gradually lose muscle mass, it’s replaced by fat. Plus, your metabolism slows down (5% per decade) and your cardiovascular endurance wanes.
The official name of this muscle shrinkage is sarcopenia. After age 60, it can reduce your mobility to make walking or getting out of a chair difficult.
So, the time to avoid the fate of your father or grandfather is now, after 40. Take it from Milo F. Bryant, 52-year-old fitness trainer and author of our book Unstoppable After 40.