night shifts

Hello,
i had half a year ago a possitive expireance.
i was in the army and i slept at the day and was awake at night. and then also shift back to sleep at night and then agine sleep at day. finaly when i came back from the army ( it was 3 weeks) , i felt preety good and i also had some libido. then it depepired. i thoght maby this shift in the hours can make maby a differance.
sombody had somthing similar?

I spent a summer working in a bar until the morning. 6months latsr i crashed.

I think in my case it was ubrelated. I was sleeping very deeply during summertime