I saw an ad that caught my eye: happywakeup.com, a smart alarm clock that you can put in your cell phone to wake you up in the morning in a more pleasant way. The company website says that by waking up a little BEFORE your scheduled alarm time and at the right stage of sleep or drowsiness, you will feel better. The smart alarm attempts to avoid a jarring and stressful awakening out of deep sleep. It tries to wake you up when you are dozing or half-awake, claiming that this is more natural, will reduce stress, and basically, make you happier in the morning. I can see it. After all, getting up a little before you want to is part of basic sleep hygiene.
First, having woken up a lot of people in my life, including patients, research subjects, my kids, and my self, I can tell you that what stage of sleep you are in before you wake up does make a difference in how you feel and perform for the first several minutes at least. Yesterday my alarm went off just as I was steering a big boat across the ocean while lying on my back worrying about the speed of the propeller. It took me a few seconds to get oriented to my bedroom, but in general, studies show that it is easier to wake up from REM sleep than from nonREM.
I have talked about sleep inertia before, the feeling of sleepiness after just waking up. Sleep inertia can impair performance for up to 30 minutes and the degree of sleep inertia is affected by what stage of sleep you wake up from. Luckily, for most people, as we near the end of our 7 or 8 hours in bed, our sleep is generally lighter and is interspersed with periods of wake and very light sleep. The happywakeup alarm tries to go off during this stage—not during dreaming sleep (REM) or during deep sleep.
How does it do this? Of course that is the company secret, but their website says that the cell phone monitors sound, such as of the sheets moving or snoring. Sound is a reflection of movement, and movement can indeed estimate wake versus sleep. The usual method is called actigraphy, and it appears that the smart alarm approximates this to estimate wake versus sleep. Then, if the person appears to be awake within 20 minutes of their set alarm time, the smart alarm will go off ! This assures that you don’t wake up say, when you are otherwise occupied steering a boat across the ocean.
I do not know if the system actually works to properly estimate wake versus sleep, and I cannot see how it could tell REM from nonREM, but depending on the person, I might guess it could be 70 % accurate. Also, whether or not waking up like this actually lowers stress or makes you happy is another question, but it sounds like a neat idea. I’d be interested to hear from any unbiased people who have tried it. Let me know what you think.
J. Steven Poceta MD is a licensed practitioner of neurology and sleep disorders who has been engaged by Revolution Health. No information in this blog is intended to diagnose or treat any condition. The opinions expressed here are Dr. Poceta’s own and do not necessarily reflect those of Revolution Health.