From the publisher: "In Willpower, the pioneering researcher Roy F. Baumeister collaborates with renowned New York Times science writer John Tierney to revolutionize our understanding of the most coveted human virtue: self-control."
 
"In what became one of the most cited papers in social science literature, Baumeister discovered that Willpower actually operates like a muscle: it can be strengthened with practice and fatigued by overuse. Willpower is fueled by glucose, and it can be bolstered simply by replenishing the brain's store of fuel."

"That's why eating and sleeping- and especially failing to do either of those-have such dramatic effects on self-control (and why dieters have such a hard time resisting temptation).
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