One thing many of us do without knowing it is hyperventilating. If you do it ever so slightly, you don't really notice it, until you stand up quickly or have a dizzy spell.

Getting sober causes its own stresses, and hyperventilation (forget the cartoon version - it can be extremely hard to detect) can be the result of that.

There are very nice breathing exercises for that, they also help you to calm down when you experience panic or anxiety. Things like breathing in in 5 steps of 1 second - keeping your breath in 5 seconds - and then breathing out in a controlled way - again in 5 steps of 1 second, the last one making sure all air is gone, helps a lot. Of course: breathe with your abdomen (belly), not with your chest. Lie down if you can. It sounds stupid, but you'd be amazed how much it can help.

Of course, with the dizziness, it's always best to ask your doc to be sure, but it's *usually* nothing serious, unless it starts happening frequently.