PTE Summarize Written Text Exercise 7
The Science of Sleep
Sleep is essential for human health, affecting everything from brain function to immune response. During sleep, the brain undergoes important processes such as memory consolidation, toxin removal, and emotional regulation. Although the amount of sleep needed varies by age and individual, chronic sleep deprivation has been linked to serious conditions including heart disease, diabetes, obesity, and mental health disorders. In modern society, artificial lighting, screen time, and high-stress lifestyles often disrupt natural sleep patterns. Researchers emphasize the importance of good sleep hygiene practices, such as maintaining consistent sleep schedules, avoiding screens before bed, and creating restful environments. Despite growing awareness, sleep continues to be undervalued in many cultures that prioritize productivity over rest. The field of sleep science continues to evolve, with new studies exploring the role of circadian rhythms, genetics, and technology in improving sleep quality.