Ideal Training in one week

I see

But there's a lot of people that say it's too much and will make my condition bad

What do you think about it? And how to make me feel untired even I pratice a lot of time?

You need to monitor that yourself.  It is hard to say what is good for you personally.

is your concentration always good? if yes i think is't not too much if no perhaps you have to play less

I train every day and three hours each session!

So alois, how much training you do in a week when you're young?

We trained 6 hours a day at one stage and 5 or 6 days a week.

May I know what it's mean 'at one stage'?

In the past for a while.