If you're trying to avoid a hangover, you'll have a better chance of staying headache-free if you stick with one type of alcohol rather than sugary cocktails. That's not because the sugar somehow makes your body absorb more alcohol, but because it masks the taste of liquor — and that makes it easier to drink more than you were planning without realizing.
Just because you're short on time in the morning doesn't mean you can't get yourself a filling, nutritious breakfast. It just means you might have to start the process the night before. Juevos rancheros in a jar, anyone? (Women's Health)