熬夜刷手机是在透支大脑褪黑素！睡眠系统也会提前老龄化

Core Viewpoint - The article emphasizes the negative impact of late-night smartphone usage on melatonin production, leading to sleep issues and premature aging of the sleep system [1] Group 1: Melatonin Production - The pineal gland in the brain begins to secrete melatonin as light decreases in the evening, with a gradual increase from 7 PM to 9 PM, leading to feelings of drowsiness [1] - A significant increase in melatonin secretion occurs after 11 PM, preparing the body for rest [1] - Disruptions caused by caffeine, bright lights, or stimulating emotions can confuse the body's natural rhythm [1] Group 2: Impact on Young Adults - Young individuals, particularly college students, often experience increased cortisol levels due to late-night smartphone use, which inhibits melatonin secretion and results in insomnia [1] - Prolonged late-night habits can accelerate the reduction of melatonin, leading to an "aging" of the sleep system [1] Group 3: Recommendations for Better Sleep - It is advised to follow a circadian rhythm by going to bed before 11 PM, getting ample sunlight during the day, and using warm yellow light after 9 PM [1] - Engaging in intense exercise two hours before sleep and avoiding smartphone use one hour prior can enhance melatonin secretion and improve sleep quality [1]