[nverno]

Anectdotally, I've also been getting in a bad habit of staying up 2-3 days and agree there are similarities to being drunk - certainly in terms of cognitive ability and reflexes - but I even experience similar loss of inhibition (although not in nearly as fun a way).

The first serious cognitive effect I've encountered is struggling to find a word I'm searching for (or recalling a person's name) in conversation. On the third day, I also start having significant vision impairment, reminiscent of hallucinogenic effects, where objects seem to be swaying slightly when I focus on them.

It also quite apparent to me that it is much harder to retain information learned after being up for a day or two.