Therapy exhausted me

Therapy really exhausted me today. It was a tough session. We worked hard, and when I got done, I had to rest.
I couldnt rest right away. Dr. Barry was phoning me and it was 2 PM when she phoned me. So we had our appointment and then I decided to rest.
I slept until around 4:30. Then woke up and ate dinner.
After dinner I still felt tired. So I decided to go back to bed and read. I ended up falling back to sleep again.
Its 2 AM now and I am wide awake, all because I rested for too long, but, I am ok with it. I dont have plans tomorrow, other than working on friendly call, so its all good.