Here is my experience with insomnia, anxiety, and stress.
I have the memory of a moist colander (on a good day).
When I was at university, I had to study for at least 14 hours a day. And I mean every day.
No matter how far in advance I began preparing for exams, I just couldn’t remember my notes or my lectures.
It felt like there wasn’t enough hours in the day.
Occasionally, I would go and train but I looked and felt like AIDS on legs.
There was nothing left. I was burned out.
It had become so bad that even the few shitty hours of sleep I could get, sucked!
I kept waking up, it took me around 2 hour each night to fall asleep and it it just spiraled out of control.
As you can see I needed to make the most of what little sleep I had.