Sleep is very important. No doubt, there is no denying that when we get a good nights sleep, that we generally feel better and it gives us a break from anxiety, and helps our nerves to recover from all that overstimulation that is the essence of anxiety disorder.
But it’s interesting to note, that even after a longer rest, sometimes you can feel exhausted and lethargic. And on the flip side, for a shorter sleep, you could feel more refreshed. At least this is the experience that I have had from time to time.
Two nights ago, I overslept for fajr, and got 7 hours of uninterrupted sleep. Although it was uninterrupted sleep, I woke up very sluggish, and not feeling so fresh. I prayed fajr when I woke up, and then dozed off again for more sleep.
The amazing thing was, comparing the two nights, last night, I felt that I had more energy. I felt more refreshed from the sleep, even though it was very little, compared to my longer sleep, missing tahajjud and fajr.
There could be many possibilities as to why this is the case, but one thing that comes to mind is the hadith: