The quality of our night's sleep has a direct impact on our overall well-being, and the state of our physical and mental health. We need to receive 8 hours of good sleep every day to live fully. During the night, we fall into different phases of sleep, when we are just napping or sleeping deeply. To get a night of quality sleep, it is crucial not to miss the period of deep sleep, which commonly starts at 1:30-2:pm. It means that if you are a night person and tend to work or study at night more effectively, your sleep quality decreases, and you start feeling worse on a physical and mental level.