Yeah, same in government contracting with the coffee and alcohol. Older guys all just drink (obscene amounts of) coffee and us young guys go out and drink and smoke.
One thing I have seen quite a bit of in the Gov't contracting world is the smoking of all kinds of tobacco. I'm a pipe smoker but we have plenty of guys who enjoy regular and simi-regular cigar smoking. We also have a more cigarette smokers then I was used to seeing in the purely commercial sector. I don't know why this is. These are just some observations I have made.
I've heard there is research that it improves cognizance in dementia patients. Here's a google dork because I can't find what study I am talking about:
site:*.edu -intitle:muscle creatine dementia study
Just a tip: if you are specifically searching for papers, you can use https://scholar.google.com. this way you will find more than just American studies. Sci-hub helps with getting the papers if there isn't a source already.