Step 6 of 8 · Steady Before Exams
When the Result Isn't What You Hoped
When the Result Isn't What You Hoped
Step 6 · 13 min
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Exam season is often treated as a period in which normal life must be suspended.
Sleep is cut. Exercise disappears. Meals become whatever is fastest. Friends are seen as distractions. Everything goes on hold until "after exams."
The irony: this sacrifice of wellbeing directly impairs the cognitive performance you're trying to protect.
Sleep deprivation reduces cognitive performance more than alcohol at the same blood impairment level
Exercise during exam season improves memory consolidation and reduces cortisol
Social connection is not a distraction — isolation increases anxiety and impairs performance
The 90% rule: if you maintain 90% of normal wellbeing habits, you perform significantly better
Matthew Walker's sleep research is unambiguous: a single night of 5–6 hours of sleep produces a 25–30% reduction in working memory capacity, attention, and problem-solving speed. Continued sleep deprivation compounds linearly. A student who sleeps 5 hours a night for five nights before an exam is not just slightly impaired — they are cognitively significantly compromised in exactly the faculties the exam requires.
And the cruelest part: sleep-deprived students consistently underestimate their own impairment. They feel more alert than they are.
Exercise during exam season is not a luxury. John Ratey's research on exercise and the brain shows that even 20 minutes of moderate exercise increases BDNF (brain-derived neurotrophic factor — the growth factor for new neural connections), improves mood, reduces cortisol, and significantly improves memory consolidation for material studied in the hours following exercise. A 20-minute walk after a study session is better for retention than 20 more minutes of study.
Social connection: the cognitive and emotional cost of isolation — loneliness's effect on cortisol, sleep, and immune function — is well-documented. Brief, genuine social contact (even 15 minutes of real conversation with a friend) has measurably positive effects on subsequent cognitive performance.
The 90% rule: if you maintain 90% of your normal sleep, eating, movement, and social habits during exam season, you will perform significantly better than if you sacrifice them in pursuit of more study hours.
Find a comfortable position · Read slowly
For the next exam season, make these three non-negotiables:
1. Sleep floor: I will not sleep less than ___ hours, no matter what. (Minimum 7.)
2. Movement: I will move my body for at least 20 minutes every day.
3. One social connection: I will have at least one genuine (not WhatsApp) conversation with a friend each day.
These are not indulgences. They are the conditions under which your studying actually produces results.
Taking care of yourself during exams is not selfishness or weakness. It is the science of performing well. The student who sleeps consistently outperforms the student who stays up — every time.