Waking up in the morning, for most of us, is worse than jumping into a cold shower; even a cold shower is sometimes needed to get you up and going. There is that minority, however, who wake up in the early hours of the morning and try wake everyone else up at the same time. You must often wonder how these people do it.
It is partially to do with their personality type and also to do with timing their sleep so that they are waking up whilst they are in a very light sleep. This is where the Sleep Cycle app for the iPhone comes in so handy. It monitors a characteristic of the human sleeping pattern and will then wake you up as close to your alarm as possible but making sure you are not in a deep sleep either.
You go through a cycle whilst you sleep ranging from light sleep, into a middle sleep where you dream and then a deep sleep. You will then move out of a deep sleep where you will dream again and then be sleeping lightly and so the pattern continues. One of the characteristics of this is body movement. People tend to move a lot in a light sleep but don’t move much at all in a deep sleep.
The iPhone’s accelerometer picks up the movement, as it is placed on the bed before you go to sleep, and it tracks and records your sleep and predicts the best time to wake you up. The only down side is that you have to keep your phone on your bed and that is if the tiny charging cable will reach your bed.
It does work though and as you can see by the graph it is relatively accurate. All Sleep Cycle need now are better alarm tones.