Caffeine and sleep

The sleep Foundation article examines how caffeine affects sleep by blocking adenosine receptors, a neurotransmitter that promotes sleep, leading to increased alertness. Caffeine can reduce both the quantity and quality of sleep, decreasing deep slow-wave sleep essential for feeling refreshed. Its stimulating effects can last several hours, potentially causing insomnia or fragmented sleep if consumed too close to bedtime. Chronic sleep deprivation from excessive caffeine intake may impair cognitive functions such as memory, attention, and learning. To enhance brain health, it's advisable to limit caffeine consumption, especially in the afternoon and evening, to promote better sleep quality and cognitive performance. The article is based on current scientific understanding and provides practical guidance for individuals seeking to improve their sleep and brain health.