In line with Sustainable Development Goal 3, sleep is essential for human health, giving the body and mind a chance to rest and recharge. When a person doesn't get enough sleep, negative effects begin to appear on both physical and mental health. First: The Physical Effects of Sleep Deprivation Second: The psychological effects of sleep deprivation Sleep deprivation directly affects mood, increasing feelings of stress, anxiety, and irritability, and potentially leading to depression in the long term. It also weakens the ability to concentrate and make decisions, and negatively impacts academic and professional performance, as well as social relationships.