I have an important A-Level exam tomorrow that I need an A in to get into university and I am absolutely exhausted mentally due to lack of sleep. I have tried revising but I just feel that I am making myself more overwhelmed and stressed and that I would be better off just resting, but then I will probably struggle to get to sleep tonight.
Anyway, my main question really is does studying or using your brain a lot when tired have a bad effect on your brain over a long period of time i.e. reduce its effectiveness? I have read somewhere that it does but it seems like a dodgy website.
It's not too late!