People typically think that becoming a stronger runner is all about training muscles, tendons and bones. It’s not.
It’s mainly about developing the connective tissue that holds them together.
Runners don’t dread getting injured by twisting their foot, or by becoming concussed, (even though those things do happen). Most “runner-specific” injuries are blown knees, torn ACLs, lower back pain, plantar fasciitis. All these injuries have one thing in common: they occur because the body was subjected to excess repetitive shock.
What do we typically say to this?
We say: let’s strengthen the muscles, tendons and bones (besides the usual “what did you expect? You went running”). But that advice is inaccurate, and largely useless.
That advice doesn’t take into account the existence of what is cumulatively one of the largest organs, whose main structural function besides connecting other tissues happens to be absorbing the mechanical stresses applied to the body.