Reading Metrics
Grade Level
Upper Grades (UG 9-12)
Book Level
8.3
Points
3.0
Fiction/Nonfiction
Nonfiction
Word Count
17830
Points per Word
0.000168
Page Count
112
Points per Page
0.026786
Series
Diseases and People
Description
This book examines sleep and the normal stages of sleep, sleep disorders, their causes, and treatment and why a lack of the right amount and quality of sleep is dangerous.