I woke about 20 minutes before my alarm this morning. There’s no point trying to get back to sleep in that situation – I’ll just lie there thinking “my alarm is about to go off“, until it does. So I got up, and was pleased to note that the weather bureau had been overly pessimistic (80% chance of rain, they had predicted) and in fact the rain radar was pretty clear. Because of my hamstring tendon problem I’m not walking much these days, but I was up early so I decided to walk slowly as far as I could go along the route of the Night Ride bus and get on the bus at a stop further along the route than the stop where I normally catch it. After I’d been walking about 30 minutes the algorithm in my Polar activity tracking watch clearly decided that I was not going back to bed, and it vibrated and flashed this message
I guess I knew it was less sleep than preferred, but the device did also give more data about the continuity of my sleep. Only five disturbances:
And the heart rate variations during that time:
Just before midnight I got up to go to the toilet, but this didn’t seem too disruptive to my sleep and my heart rate continued its slowing trajectory to reach the lowest level in the day (55) just before I got up. That’s the good thing about being really tired – my ‘sleep time’ is nearly always efficient.
I’ve only recently started wearing this Polar device, which monitors heart rate as well as movements. The thought has occurred to me that if my heart trouble worsens and I have a fatal heart attack, my Polar device might record the last moments of my life. I’d like to see that!