I'm going to try this too... I've been training for days and nothing's happening, it doesn't level up or anything. The bar that appears after training is supposed to keep going up, right? Well, it doesn't... I'm going to try increasing my strength the way you said.
EDIT:
Nothing... no matter how much I train, my level doesn't increase or anything happens.
There must be something wrong, either a bug or something I missed, but I'm playing the game fine.
How many days do I have to train? And I'll ask again: does the level bar increase every time I train? Mine doesn't even move...