During National Sleep Awareness Week, the focus is on improving sleep by understanding and optimizing our circadian rhythm. This natural 24-hour internal clock, influenced by environmental light, regulates sleep-wake cycles and hormone release. Strategies for better sleep include maintaining a regular bed and wake time, a relaxing pre-sleep routine, and daytime exposure to natural light. Disruptions like jet lag and shift work can misalign the rhythm, affecting sleep quality. For those struggling, additional tips and professional help are suggested to achieve optimal rest.