Fitness: Make exercise a habit before your middle age

As the saying goes, age is just a number — that is until our bodies start telling us just how old we really are. And while we have little control over the number of candles that light our birthday cake, we can control some of the biological aging that occurs over time.
The idea that there’s a mismatch between chronological age and biological age is a relatively new phenomenon, with the biggest poster child for this trend being masters athletes. A favourite subject of scientists who s