Where the world comes to study the Bible

Insomnia and Laughter

Number of times a child laughs each day, on average:400
Number of times an adult laughs each day, on overage:15
Number of Americans with stress-related insomnia: 1 in 5
Number on any given day who need more sleep; 45 million
Percentage decrease in average sleep time, since 1900:20

Leadership, Fall, 1993, p. 129