Dr Chris Idzikowski has been a sleep specialist for 30 years.

克里斯•艾德辛科斯基博士是一位从业30年的睡眠疾病专家。

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Idzikowski said the research reveals most people stay in the same position all night and only 5% lay differently night by night.

Idzikowski说，研究表明大多数的人夜间保持一种睡眠姿势，只有5%的人，不同的夜晚不同的睡姿。

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"The recordings show that he had acondition that was consistent withnight terrors, " says Idzikowski."But there's more than just a historyof sleepwalking.

“案情陈述记录显示，他一直都处于夜惊状态，”艾德辛科斯基说，“但这不只是因为有睡行症的病史。

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Director of the Sleep Assessment Advisory Service in London, Professor Chris Idzikowski, said sleepwalking is very difficult to treat.

BBC: Sleepwalking is 'in the genes'

And that fact that 73% of the world uses alarm clocks, says Dr Idzikowski, confirms the need for more sleep.

BBC: How we go to sleep

However, Professor Idzikowski said there was a possibility that sleepwalking could be a variation of an auto immune disorder, due to the genetic marker.

BBC: Sleepwalking is 'in the genes'