10 hours is not too bad, though not good, but 13 hours is too much. Study time should be broken up with breaks and you need time to do other things. Studying for too long will make you tired and your studying will become ineffective. 6 to 8 hours, properly planned and with breaks, is better.
Too much of anything can be bad.
Duh!! They Don't Like Reading Books Very Much,Books Are Like A Study Guide Because You Keep On Studying In The Book If Your Too Addicted To Reading That's How You Do Spelling And Grammar
Apparently too much laughter is bad for you.
no
If you do it too much it is bad.
Uhhh you like die.
Eating too much of anything is a bad thing. That's why its called "too much"
Alcohol, guys, ladies, not studying enough, studying too much, money, parties.
Well, nothing really. However, it's bad for you if you eat too much. It is bad for your health
yes you can either have too much or too less
No