Bedtime Routines - Why is Sleep Important Health Lesson. In this lesson, the students will learn about the importance of sleep, and the health consequences of failing to get enough. The students will learn what happens to our bodies while we sleep, as well as learning some simple measures that can help us to fall asleep (bedtime routines). The lesson includes a starter activity, a sorting task, a video clip with questions, a cut and paste activity, a bedtime routine themed literacy task and a re