Stresssssssssssssssed

I've enrolled in two classes for this summer session: Sign Language and Auditing. Each class is held twice a week and is a little over 3 hours long. Sign Language is amazing, I have such an amazing teacher but it can be difficult. The amount of signs we learn per class is unbelievable and we have a quiz each class. Then comes my Auditing class which is in the evenings. I have my first Auditing exam this coming Tuesday over 9 chapters (it was going to be 10 but my teacher was generous enough to take away one). These two classes both started on the 16th of July. Literally 2 weeks ago; so try to imagine that my stress level has gone up a considerable amount because of all these quizzes and the Auditing test. I've been studying every chance I get and I can tell it's having an affect on me already (the studying). I think I am mentally exhausted because all I ever want to do is sleep and take a break and not talk to anyone. I'm not a doctor or anything but I think this is not a good sign. And since I've been stressed, I haven't really gone to the gym because I need to study which is leaving me in a weird stress cycle of loneliness, fattiness and sleepiness that I can't seem to step away from. Someone help me please!

OK, time to get back to studying. Wish me luck!