The Science of a Good Night's Sleep

Most adults know they should sleep more, yet few understand what actually happens while they rest. During the night, the brain moves through several cycles, each combining light sleep, deep sleep, and dreaming. Deep sleep is thought to repair the body and strengthen the immune system, while lighter stages help organise memories. Bright screens late at night can disturb this delicate rhythm by tricking the brain into thinking it is still daytime. Experts recommend keeping a regular schedule, avoiding caffeine in the evening, and giving the mind time to wind down. Good sleep, they insist, is not a luxury but a basic foundation of health.