The growing body of research on sleep demonstrates the absolute necessity of sleep for every biological function. This includes learning, memory, brain function, mental health, appetite regulation, immune system function, metabolic function, the health of your gut microbiome, even your cardiovascular health. It is well established in the scientific literature that sleep is a critical component for all aspects of health, especially during pregnancy. Humans are the only species who will deliberately deprive themselves of sleep. The good news is there are many evidence-based and straightforward steps you can take to improve the quantity and quality of your sleep.