Typically, these effects only last a few minutes into waking but have been reported to persist for as long as four hours. feelings of disorientation and confusion and.Sleep inertia is a state of reduced mental and physical performance that occurs after waking and is characterised by: However, there is a problem with not taking account of the stage of sleep you’re in prior to waking and instead waking at a specific time this is due to something called sleep inertia. This is why noise is the waking device of choice used in most alarm clocks. Now, a good alarm clock will wake you up regardless of what stage of sleep you might be in so that you can go about your day, and loud noises are a sufficiently alarming(!) way to rouse a person from any stage of sleep.

The first stage of non-REM sleep (N1) is the easiest to wake from and N3 is the most difficult. amount of body and eye movement, breathing rate as well as the ease from which you can wake from them. Sleep has a number of stages to it, each with their own distinct function and features, e.g. Let’s take a look at the science behind why light based alarms are so effective. The second best option is to use a light-based alarm clock. Whether you’re an early bird, night owl, shift worker or anything in between and want to be at your best throughout the day, it’s best to train yourself not to use any sort of alarm at all (a hard task, and very likely to result in you waking up later than you’d like to begin with).

In isolated cases, this has led to reactions like seizures and irregular heartbeat but, for most of us, the reaction is not that extreme. This solution has been employed for hundreds, if not thousands of years to bring ourselves into wakefulness. Most people will use a sound-based alarm to shock themselves out of sleep. If you’ve ever felt groggy, weak, unable to concentrate and generally “a little off” after waking up, it might just be time to consider how you wake up.

Deep sleep unable to wake up