Sleep hygiene refers to behaviors and environmental conditions that promote quality sleep and avoid sleep disorders. Healthy sleep habits include behaviors that help falling and staying asleep through the night. Establishing good sleep hygiene practices throughout the day impacts both quality and quantity of sleep. While improving sleep hygiene is important, it may not always resolve sleeping problems on its own, and other treatments are usually necessary as well. Changes to sleep habits should be gradual, as learned habits can be difficult to change quickly.