Questions 11 ～ 13 are based on the following talk. You now have 15 seconds to read Questions 11 ～ 13. Which of the following statements is NOT TRUE
A．Getting off to work with a minimum effort helps save one’s energy. B．Dr. Kleiman explains why people reach their peaks at different hours of a day. C．Habit helps a person adapt to his own energy cycle. D．Children have energy cycles, too.