There are two kinds of sleep: restful and unrestful. During restful sleep, you wake up feeling refreshed after a full night of several, uninterrupted, sleep cycles. During unrestful sleep, you may toss and turn all night, wake up several times, and wake up feeling as if you could sleep for another three hours. Regardless of how many hours you spend in bed if your sleep is not restorative, then you are still not achieving the amount of sleep that you need for optimal functioning.
If you wake up feeling like you hardly slept, even if you were in bed with your eyes closed all night, it’s going to inhibit your ability to enjoy life – you’re going to be tired all the time. When you are tired all the time, you are crabbier, perform worse in nearly every task, lose motivation to do things for yourself or with others, have a reduced sex drive, etc. Life is simply less full when you have chronic fatigue.
It’s frustrating. You feel like you should be rested and happy because you've had a full night's sleep. This phenomenon is generally a strong symptom of either of the following:
- Bad habits and/or cognitive conditions
- Sleep disorders
- Bad sleeping environment
- Medical problem
Let’s look at these in more detail.