I got sober last year and did four months before my first relapse, and during that time I was tired *all* the time. So lethargic and didn’t want to do anything really. I’m now thirty days after my second relapse, and feeling it hard. I’m fairly certain that alcohol causes this, firstly because of years of interrupted sleep caused by alcohol, and secondly that the body has a lot to fix when you quit. Give it time, look after your mind and your body, and if it continues go see a doc and get your blood tested. As someone said in this thread there could be another issue such as vitamin deficiency.