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Exam Preparation

Test Day Habits: Sleep, Timing and a Calm Start

Limited evidence 5 min read Level: Beginner Reviewed October 30, 2026

Practical test-day habits for the night before, the morning and the exam itself, with honest notes on what research supports and what is just common sense.

Evidence rating: Limited evidence. Some test-day habits have research behind them, such as the link between sleep loss and weaker learning and attention (Curcio et al., 2006) and a classroom study in which writing about worries before an exam helped anxious students (Ramirez & Beilock, 2011). Most other advice, like what to eat or how early to arrive, is common sense without strong evidence. Results vary a lot between people. How we rate evidence

What it is

Test-day habits are the small choices you make from the evening before an exam through the last minute of the test. They include when you sleep, what you pack, how you start the exam and how you handle the questions.

These habits cannot replace studying. They protect the studying you already did. A student who knows the material but sleeps four hours, arrives late and rushes the first page may lose points that had nothing to do with knowledge.

The research is mixed, so this guide is rated limited. Sleep has the best support. Reviews link sleep loss with weaker attention and memory (Curcio et al., 2006), and sleep after learning is thought to help the brain store new memories (Diekelmann & Born, 2010). A study of students in a high-pressure setting found that ten minutes of writing about worries before an exam improved scores for students who were anxious about tests (Ramirez & Beilock, 2011). Other tips, such as eating a normal breakfast, are reasonable but not backed by strong studies.

Treat this as a checklist to try, then keep what helps you.

When to use it

  • You have an important exam in the next few days and want a simple routine.
  • You get nervous before tests and want steps to follow.
  • You have lost points before to rushing, misreading questions or running out of time.
  • You are taking a long exam, such as a final or standardized test, where pacing matters.

How to apply it

  1. Two days before, stop learning new topics. Review your error log, formula sheet or flashcards you missed, and do a short practice set.
  2. The night before, pack your bag: ID, pencils, calculator, water, any allowed items. Check the room and time. Pick a normal bedtime and aim for a full night of sleep, which for most teenagers is around 8 to 10 hours.
  3. On the morning, eat something you normally eat. Skip trying new foods or a much larger amount of caffeine than usual.
  4. Arrive a little early, but not so early that you spend half an hour reviewing in panic. Light review of a one-page sheet is fine.
  5. If you feel nervous, try writing down your worries for a few minutes beforehand, then take slow breaths with a longer exhale. Some students find this settles them.
  6. At the start, scan the whole test. Note how many questions there are and how many points each part is worth. Split the time so you know where you should be at the halfway mark.
  7. Answer easy questions first, mark hard ones and return to them. Leave a few minutes at the end to check names, units and skipped items.

Step-by-step examples

Example: a plan for a 90-minute math final at 9 am

  1. At 7 pm the night before, review your error log for 20 minutes. Pack a calculator, two pencils, an eraser and a water bottle. Check the room number.
  2. Be in bed by 10 pm with the phone away, so you can get about 8 hours of sleep.
  3. At 7:15 am, eat your normal breakfast. Skim a one-page formula sheet for ten minutes on the way.
  4. In the exam, spend two minutes scanning. With 30 questions in 90 minutes, aim for about two minutes each, with 15 minutes left for checking.
  5. If a question takes more than four minutes, mark it, move on and come back.

Example: handling nerves before an essay exam

  1. Ten minutes before the exam, write on a sheet of paper everything that worries you, such as: I might blank on the dates.
  2. Underline the worry that feels biggest and write one thing you will do if it happens, such as: I will jot down any dates I remember first.
  3. Take five slow breaths, breathing in for four seconds and out for six.
  4. When the exam starts, spend the first five minutes outlining each essay before writing.

Advantages

  • A simple routine removes small decisions, which leaves more attention for the exam.
  • Good sleep is linked with better attention and memory, which are both things a test needs.
  • Pacing plans can lower the chance of running out of time.
  • Having steps for nerves can make a test feel more manageable.

Limitations

  • Most of these habits are common sense and have limited direct testing.
  • Sleep needs differ between people, and some nights of poor sleep happen no matter what you do.
  • Writing about worries helped in studies of specific groups, and may not help everyone.
  • None of this will make up for not studying the material.

Common mistakes

  • Staying up all night to review. Lost sleep can hurt attention and recall the next day.
  • Trying a new food, drink or routine on exam morning.
  • Reading the first question and diving in without scanning the full test.
  • Spending too long on one hard question and rushing the rest.
  • Handing in the test without checking skipped questions, units or names.

Recommended next steps

Part of the path Prepare for Exams (step 6 of 6).

References

  1. Curcio, G., Ferrara, M., & De Gennaro, L. (2006). Sleep loss, learning capacity and academic performance. Sleep Medicine Reviews, 10(5), 323-337.
  2. Diekelmann, S., & Born, J. (2010). The memory function of sleep. Nature Reviews Neuroscience, 11(2), 114-126.
  3. Ramirez, G., & Beilock, S. L. (2011). Writing about testing worries boosts exam performance in the classroom. Science, 331(6014), 211-213.

This guide is general educational information. Study methods work differently for different people, and no method guarantees better grades or results.

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