Let's take a look at Jenny's situation.

Jenny has a big exam coming up tomorrow. She doesn't think she has studied enough to get a good grade. What's the best way that Jenny can bring down her stress level before taking the test?

Stay up late, drink a lot of coffee, and cram as much of the textbook as possible into her head.
Study until bedtime, wake up early, eat breakfast, and walk to school with her best friend.
Study until bedtime, wake up early, and study some more until her mom drives her to school.