千万不要这样定闹钟！危害比你想得多

Core Viewpoint - The article discusses the negative effects of being awakened by an alarm clock, particularly when it interrupts deep sleep, leading to discomfort and impaired cognitive functions. Group 1: Sleep Stages and Alarm Impact - Sleep consists of several cycles, including light sleep, deep sleep, and REM sleep, with each stage affecting the waking experience differently [3][4] - Waking up during deep sleep can lead to poor short-term memory and cognitive performance for up to two hours after awakening [4] - Alarm clocks can disrupt the natural waking process, causing sleep inertia, which is the time needed for the brain and body to fully awaken [6] Group 2: Effects of Alarm Sounds - The choice of alarm sound significantly influences the waking experience; softer, gradually increasing sounds can reduce the shock of waking [8] - Sudden loud alarms can cause a spike in blood pressure and heart rate, leading to a stressful waking experience [8] Group 3: Alternative Awakening Methods - Natural light and gentle vibrations are recommended as more suitable methods for waking up, aligning better with the body's natural rhythms [10] - Using light to simulate sunrise or employing vibrating alarms can help individuals wake up more comfortably [10]