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Getting off to work with a minimum effort helps save one's energy. Dr. Kleitman explains why people reach their peaks at different hours of day. Habit helps a person adapt to his own energy cycle. Children have energy cycles, too.
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Getting off to work with a minimum effort helps save one's energy. Dr. Kleitman explains why people reach their peaks at different hours of day. Habit helps one adapt to his own energy cycle. Children have energy cycles, too.
Getting off to work with a minimum effort helps save one's energy. Dr. Kleitman explains why people reach their peaks at different hours of day. Habit helps a person adapt to his own energy cycle. Children have energy cycles, too.
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