Quote Originally Posted by khris View Post
18 to 22 train fast, and decreases with the age.
18,19 and 20 are the fastest, then it slows for 21,22 and 23, starts getting pretty non-existent after that.

You also need to take into account what level the players is at as well. An 18 yo 6* fast trainer is slower than an 18 yo 5* fast trainer, who is slower than an 18 yo 4* fast trainer etc etc