The circadian cycle is a biological rhythm that follows a cycle of approximately 24 hours and is mainly influenced by light. Natural sunlight plays a crucial role in regulating this cycle, as it helps maintain the proper sleep-wake rhythm. However, excessive exposure to artificial light, especially blue light, can have a negative impact on circadian cycles and sleep. due to its ability to suppress the production of melatonin, a key hormone that regulates our sleep. Nighttime exposure to blue lights can unbalance our circadian rhythms, making it difficult to fall asleep and negatively affecting its quality.