My main takeaway from the book was OMG, nobody in my family was getting enough sleep and we need to fix that. Walker is a professor at UC Berkeley and director of the Center for Human Sleep Science. According to Walker's research, adequate sleep (recommended average of 8 hours of nightly sleep for adults) offers a multitude of health benefits, such as protection from cancer and dementia, wards off colds and the flu, and improves our ability to learn and be more creative. Sheesh. Sign me up.
I enjoyed the book very much and highly recommend it for learning about the current research on sleep. Summary: Not enough sleep = bad. Consistent sleep night after night = good. You're welcome.
Bonus tips to making sleep a priority in your life / schedule: the book has an Appendix that offers twelve tips for healthy sleep that comes from this NIH Medline Plus magazine (see page 20 for the tips, and the sleep feature starts on page 16 of the magazine). You're double welcome.