What is deep sleep?

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Producer:Videojug
Source Organization:Videojug
Duration: 3:19
Family friendly: Yes
Video quality: 360p
Video frame size: 640x360
Player type: Flash
Encoding format: h.264
Bitrate:900kbps

What is deep sleep?

Chris Idzikowski (Director of the Edinburgh Sleep Centre) gives expert video advice on: What is deep sleep?; When are we at our deepest sleep?; If we are unconscious when we sleep, how do we wake up? and more...

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