Training aggression for pressing

[04texag]

I'm working on my 4141 total football culture at my club and I want to ensure that my attacking midfielders, midfield and strikers all have a higher base aggression and work rate attribute. Does anyone have good methods to help train towards this? 

So far, I've only come up with the team training of transition press/restrict, and giving the players some time training the striker position as a pressing forward.