Number of hours per day suggested for chess?

I'm increasing the amount of time inverted in chess per day (I'm officially a chess addict) and actually I feel I'm improving, my rating is going up and everything is going great.

But... in the last two days while playing I realized after make some silly blunders that I was playing too much time and my head wasn't clear! Maybe my brain was tired ....

I'm playing 3 tournaments (17 games in total with some few other online games), doing 25 puzzles from tactics trainer and trying to read about opening, strategy and endgame as much as I can absorb.

I have never received a class from a pro, or a coach, nothing like that; never played a tournament out of internet and I'm expecting to do it soon so I want to be prepare obviously not pretending to win but to good enough to feel I've done a good job.

My question.. as the title!

Number of hours per day suggested for chess?

How many games simultaneously so it does not distract me? How much time for reading?

This far I would like to think you get my point and what I'm trying to say and know.

Thanks!!

LOL. 25

Well, I took a 4 days vacations and during those days I didn't play chess..! So I will share a secret with you..

there's a kind of life out there.. but no sure is intelligent