1. Take a deep breath
It sounds cliche, but taking a deep breath resets the mind and allows for you to unravel for a few minutes. Put your papers down, shut your laptop, and take a deep breath. It'll all be over soon.
2. Don't overwork yourself
Yes, studying for these tests is an absolute must, but don't make yourself exhausted over it. Take a break. Get a coffee or a snack. Take a small nap to reset your mind and body. A fresh mind learns and comprehends better.
3. Get help when you need it
Every school offers different resources for any subject you need. If you don't understand something, reach out and get help. Whether it's from a tutor, your professor, or a resource like a study group or a math center.
4. Do your best
Most importantly, do YOUR best. Go into that testing room and kick some butt and ace that exam. If you leave your exam knowing that you did your absolute best, then that's all that matters.
This may seem like one of the longest weeks of the semester or maybe even your life, but believe me, you're going to get through it. You have a bunch of people in your corner rooting for you, even when it doesn't seem like it. Midterm week will be over before you know it and life will get just a little bit simpler.