Congrats and great post sydneyman!
I've always been average or underweight myself. I'm a 5 foot 9 woman and I weight around 121 pounds at the moment. The one thing I did notice is that regardless of how low my weight was, alcohol ALWAYS caused me to have a podgy looking stomach. I'd be slim all over apart from the chubby booze gut. That completely went once I'd given up alcohol.