Why is it that when i wake up at 2 am

[hollow]

I have this incredible mental clarity

If there is some problem that i kept thinking about during the day, suddenly a solution comes to my mind

Everything just seems so crystal clear

Then i go back to sleep, wake up later and feel brainfogged and anxious about the same problem i had the day before

[B00X]

I guess your mind has calmed down during that time