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“ But preferring to work at night might go beyond a need to escape distractions. Some people are hard-wired to perform better as it gets later, said Michael Thorpy, director of the Sleep-Wake Disorder Center at the Montefiore Medical Center in the Bronx. “Our circadian timing of sleep is affected by genetics, and people all differ,” he said. Mr. Thorpy said many people experience surges of alertness two to three hours before they fall asleep — ideal for powering through some unfinished business. “If it fits in with their lifestyle, it can work very well,” he said. “A large part of their waking day is when things are quieting down.

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