Belle’s Reviews > The Ultimate Sleep Guide: 21 Days to the Best Night of Your Life > Status Update

I already have a background on the science of sleep from Why We Sleep. Most is also in this book summarized and served as a refresher for me. For content more leaning on the science I still recommend Why We Sleep.

There is no hint in the blurb that the author will preach the Bible alongside medical advice so it was a surprise. I have skipped a lot of parts already. Content is good though so i will ignore these parts