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Approximately one third of our life is spent asleep but when I started to think about sleep, I realized that my mind was completely blank. One day I went to spend a weekend with Dr Hernandez, director of the local Sleep Laboratory.
First of all I wanted to know why we sleep. Dr Hernandez said: “Well, years ago we didn’t really know, but recent science has shown that people who don’t sleep enough soon get ill and often die.”
I wondered if our bodies experience any changes while we sleep. Dr Hernandez replied: “In some stages of sleep the heart rate and our breathing slow down but in other stages the opposite happens – the heart rate increases and our breathing becomes quite rapid. During the night our body temperature drops by one or two degrees too.”
During the night our body temperature drops by three or four degrees too.
During the day our body temperature drops by one or two degrees too.
During the night our body temperature doesn’t drop by one or two degrees too.
During the night our body temperature drops by one or two degrees too.
