I've noticed people have become more concerned and ask a lot of questions, especially at work. I was working nights and would lay my head down on my desk during lunch, but rarely go to sleep. Just closing my eyes and relaxing for that bit of time was all I needed, but people seemed alarmed even after I explained it. I oftened wondered if they thought I was on drugs or had a substance abuse problem. It probably didn't help that at the same time I was on my diet and workout regime, and losing weight.
I grew up around family that had substance abuse problems, so I've never touched drugs or had a problem with alcohol, I honestly don't care for the taste of it.