am I rotting my brain?
When you're binge-watching shows like Orange Is the New Black, Game of Thrones or Lost your brain is attempting to handle complex plots and a billion characters that it's difficult to keep straight.
This means that we're not overstimulating our brain with complex TV series, because our brain frequently handles our own complex reality.
The moral of the story is that your brain can pretty much handle unlimited binge-watching.
The average American watches 40 hours of TV a week, and even as a TV lover, I do not approve of that egregiously high number.
I'm not condoning anyone never leaving their house to stay on Netflix all day. Please go outside, read a book or something.