adequate sleep.
             2. Vary what you study. Don't study for two similar courses consecutively. It is better to break the pattern into two completely different courses. For example, study chemistry and then French instead of chemistry and then physics. This helps to prevent you from getting confused between similar subjects.
             3. Schedule study time when you feel energized
             Studying while you are mentally fatigued is usually a waste of time. You should, study the most difficult courses early in the day at higher energy times, like early in the morning or after
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