I have an app on my I-phone (one of many, but this is a useful one!) that monitors my sleeping pattern as I thought it would be interesting to see if I could learn something about my fatigue.
Some nights I seem to have barely any REM sleep; I seem to have about 5 hours solid of NREM ie deep sleep. I have often joked to my son that it feels more like I go into a coma at night and that is why it is so hard to wake up. In fact a couple of years ago I bought a ‘sunrise’ alarm clock which makes getting up a bit easier. This is easy to track on the app as it shows that in that last half hour I do gradually come to a lighter sleep. I guess this is why I rarely dream any more either.
I feel much better today and it’s no surprise to see that last night the graph shows that I had a much better sleep cycle with periods of deep sleep interspersed with REM sleep. It makes such a difference; I woke this morning feeling reasonable refreshed especially after the shower surprised me by going cold right in the middle!! (I have phoned the landlord and he will come to have a look at it later ).
I just found this quite interesting and I think it makes a difference to my fatigue levels but I am not sure why. Are there any experts out there on sleep who can shed any more light on this? Why does it make such a difference that I have can have two nights of 7-8 hours sleep but at such varying quality that I wake feeling so ghastly one day and so refreshed another day? In other words why is the REM sleep so important?