Marc Weissbluth

AGE: 69
OCCUPATION: Founder, Sleep Medicine Center at Children’s Memorial Hospital

The author of Healthy Sleep Habits, Happy Child—the bible for bleary-eyed new parents now in its third edition—still works as a pediatrician on the Gold Coast. Getting an infant to sleep through the night? Now that’s power.

MORE ON WEISSBLUTH: The Secrets of Sleep

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Photograph: Denis Manarchy