That said, what is it really good for? You cannot cancel a training on level 9 or 10 once it is started. Point being if I had known then what I know now, I'd have 5 lvl 29 Mana troops at least. Another strategy for using the Hero Academy is training Common 1* heroes.
Once you level up to level 2, and research level 2, the ability to do 2 simultaneous levels of trainings is unlocked. After such a long anticipation, many people were outright disappointed with it.
Hero Academy: Level 10 plus Research Costs in food.
