[2026] PTE Academic Reading - Re-order paragraphs

Recent research has demonstrated that sleep is not merely a state of rest but is crucial for the process of memory consolidation.

For centuries, the precise biological function of sleep remained one of the most enduring mysteries in neuroscience.

During specific sleep cycles, the brain actively replays and stabilizes new information learned throughout the day.

Consequently, a chronic lack of sleep can severely impair an individual's cognitive ability to retain new knowledge and perform complex tasks.

This neurological activity strengthens the connections between neurons, moving memories from short-term to long-term storage.