Sleep hygiene plays a crucial role in the field of epigenetics, influencing how our genes are expressed and impacting overall health. Epigenetic modifications do not change the DNA sequence but can activate or silence specific genes based on environmental factors and behaviors. Quality sleep helps regulate genes associated with stress response, immune function, and metabolism. Maintaining good sleep hygiene—such as consistent sleep schedules, a restful sleep environment, and healthy pre-sleep habits—can lead to beneficial epigenetic changes. Conversely, poor sleep patterns can result in adverse epigenetic modifications, increasing the risk of chronic conditions like obesity, diabetes, and cardiovascular disease. By prioritizing sleep hygiene, individuals can positively influence their gene expression and promote long-term health and well-being.