"This is a fact-packed and energetic look at the science of stress and the history of stress research. It explores the effects of stress on the human body, how those effects were discovered, and what we can do about them. The book also includes wacky historical beliefs, strange experiments and the biographies of stressed-out stress researchers. Middle grade readers will learn about the fight, flight or freeze response, how our bodies handle chronic...

Raina wakes up one night with a terrible upset stomach. Her mom has one, too, so it's probably just a bug. Raina eventually returns to school, where she's dealing with the usual highs and lows: friends, not-friends, and classmates who think the school year is just one long gross-out session. It soon becomes clear that Raina's tummy trouble isn't going away... and it coincides with her worries about food, school, and changing friendships. What's going...