I played ps4 10 hours straight yesterday
Is it because of your upcoming exams?
That's right. I'm too worried about the upcoming exams, so much that I don't want to do anything but think about them.
It's not healthy to sit around and play video games for 10 hours straight. You should really start studying for you exams instead.
What is wrong with a little break here and there? It's not like I've been doing it everyday.
If you haven't been doing it everyday then I guess it is fine. So long as for the majority of the time you were studying.