Ok.

So I've just learned the fundamentals of EV training and decided to go try it out. Went to the verdanturf cave with my lvl 60 metagross, killed 4 whismurs and to my dismay my HP didn't increase. Why is this? I'm assuming it's something like the stat changes only occur on a level increase but I can find no guide that confirms this, oddly.


Much appreciated if anyone helps.