请求英语翻译..

I have a bad habit of turning the pen in classes, I know it's not good. I believe I can give up this bad manner.

这不是坏习惯，转笔可以促进小脑发育，从而使思维变得更活跃。

I have a bad habit of turning the pencil in lessons.But I konw it's wrong,I believe I can give up the bad habit.