Does exercise close your growth palates?

[Avertion]

Or does it stop them from closing?

 

[Megfish21]

Exercise develops the muscles, tendons etc other tissues as well as blood vessels around bones and respective plates, which get a better supply of blood.
It also causes stress to bones which makes them more robust and potentially longer. As of current research it does not speed up/slow down the closure of growth plates.
Proper, non-retarded exercising combined with a healthy lifestyle and habits will not only not stunt growth it promotes it.

 

[ey88]

Neither