My brother is stressedWatch
He thinks he'll have no future if he fails, he probably won't fail but I'm just trying to get him to understand that if he does fail that he'll still have a future. I'm not sure if I should even just take him to the gp and maybe stop the exams because he's overdoing it, he's stressed, he isn't sleeping, he's panicking and it's not good. It can affect his health. I could get all this stress and everything then he could go back to retake the exams next year but that might make him feel the same as he does now so I don't know. Exams might not be for him if he's getting this stressed about them. They can be important but he can be successful without exams but what can change his future is stress because it can cause health problems in the future.
Many people get stressed about exams. I wouldn't say staying up to revise until midnight is particularly late tbh. If you are worried about him, speak to him and perhaps encourage him to speak to a teacher he trusts.