In Training With a Hangover, Bill Starr says:
The first thing I taught them when they stumbled into the weight room with giant hangovers was that the alcohol was nothing more than expensive carbohydrates. Which means it can be used as fuel for physical activities. I also advanced the rather foreign notion that just because they feel terrible that doesn’t mean that they can’t get in a solid workout. Their muscular and skeletal systems and all their organs are still going to operate exactly the same. All they needed to do was override the splitting headaches and upset stomachs and they could still get stronger.
I interpret this to mean that the only barriers to successfully completing a prescribed strength training workout during a hangover are headache and nausea and that force production is unaffected.
Specifically, he claims "their muscular [...] systems [...] are still going to operate exactly the same".
Is this true?