Depending on your sleep phase, you may wake up during the REM/deep sleep phase, which then you feel tired and sleepy
While waking up during the light sleep your brain can wake up easier.
It's hard to write about that stuff, since English isn't my main language.
Also every body is different so if something works for a friend it doesn't have to be same for you
I see, so I don't have to worry about that?
Usually no, it's just what I experienced the last years with my sleep cycles.
This topic depends on so many variables that you probably should ask a doctor about it, If you are unsure.
I will look for a doctor, and ask him. Thank you guy.
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