Euphoria. Relaxed, calm, and euphoric. It's a state of bliss really. Cumming does wonders for your mental health. When I was in grad school I was so tense and stressed all the time, working full time as well, and my gf was so caring. She would see me exhausted or stressed and do small things for me, like make sure I eat, or "destress" me with a BJ or sex. I can't count the amount of times I was tense and stressing over stuff, only to have her interrupt me and lead me to the couch while she tied her hair back and sucked me senseless out of the blue. The release of cum can easily help take a bad day, and turn it into a relaxing night. Dopamine is a hell of a drug.