3 - Why Do We Need Sleep?

Summary

Sleep is a critical component of our daily routine, constituting about one-third of our lives. Its impact on cognition, mood, and behaviour is profound across all ages. During sleep, the brain reorganizes, removes toxins, and enhances immune function, vital for memory consolidation and emotional regulation. Sleep occurs in two main phases: non-REM and REM sleep, each crucial for different aspects of brain function and memory processing. Optimal sleep duration varies by age, with consistent patterns associated with better health outcomes. Unfortunately, many suffer from insufficient sleep, linked to numerous health issues and decreased cognitive performance. Ageing exacerbates sleep disturbances, impacting brain health and cognition. Research underscores the bidirectional relationship between sleep and brain function, with changes in the brain affecting sleep quality and vice versa. Strategies to improve sleep include maintaining a conducive sleep environment, avoiding stimulating activities before bed, and practising relaxation techniques. Prioritizing good sleep habits is essential for overall wellbeing and optimal functioning in daily life, promoting vitality and resilience. Monitoring sleep patterns ensures individuals achieve the necessary rest for a balanced and fulfilling life.