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Develops text into a fuller version, up to three paragraphs Example Sleep affects memory in important ways, and people who cut their nights short often remember less of what they studied because the brain has less time to consolidate new information. When sleep is shortened, it becomes harder to retain details, recall facts later, and build on what was learned the day before. This is why getting enough rest can make study time more effective, since sleep helps turn recent learning into memories that are easier to access later.