What is the situation of your brain during the sleep before an exam?

(11)Just because you’re asleep doesn’t mean your brain isn’t busy behind the scenes. Have you ever felt nervous the night before an exam because you couldn’t recall any of the material, but then the next morning you woke up to discover a staggering difference in your ability to remember?(12)If so, this happened because your brain strengthens your memories while you sleep. Whether you’re learning a new language, studying for a test, or exploring a new hobby, expect to perform better after a good night’s sleep.
    Are you having a hard time sleeping because you’re stressed, or are you stressed because you’re having a hard time sleeping? Your quality of sleep and level of stress are so closely related that it can be hard to tell the difference, but the fact remains:(13)a good night of shut-eye will help you get rid of the nasty mental monsters living inside your thoughts. If you manage your stress, you can also look forward to improved heart health and blood pressure levels.