How healthy are screwdrivers?

As sick as I was yesterday, once 3:00pm hit, like clock-work, I started feeling better. I jumped in the shower, lined up a few friends and was at the bar by 3:30.

But since I wasn't 100%, I didn't think it would be a wise to sit in a bar all afternoon/evening, drinking beer. So instead I drank screwdrivers, which, to me, is a health drink.

After a couple hours, my friends had to go so I also left. But as soon as I got home, another friend called, so back to the bar I went. But this time I only stayed for about 5 1/2 hours.

I only had four drinks between 7:00 - midnight so, as the Hangover Meter indicates, I'm not hungover. Plus I didn't get up till after 9:00am. How hungover could I be?