Definition
The number of years someone has been consistently training, regardless of biological age. The humbling reminder that a 20-year-old with five years of training will outlift your six-month gym membership.
Example Usage
Despite being 40, his 15-year training age means he progresses differently than beginners and recovers like he has a cheat code.
Origin
Exercise science term distinguishing training experience from chronological age
Fun Fact
Training age affects everything from recovery needs to program design—a high training age means you need more volume and intensity to progress, essentially victim to your own success.
Source: Strength and conditioning and program design literature
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