A study by Robin Dunbar, a psychologist at Oxford University, has found that laughter can make you feel “high” in the same way as strong painkillers and heroin do – and you don’t need any prescription or break the law. Tolerance levels for pain also increased due to the release of endorphins, which were spurred by the muscular exertions that are necessary to create an audible laugh.
https://www.skinvitality.ca/blog/get-your-natural-high-by-laughing/
I was surprised to see that like smiling, even forcing yourself to laugh can gain many of these benefits:
When you laugh, you can immediately reap the rewards—your mood improves and you relax. And it doesn’t stop there as in the long term, more chuckles can give your heart health a boost, and reduce stress.
But with everything going on in the world, it can be hard to laugh. Spending time with the people, comedians, movies, or TV shows that make us laugh the most is a good start, but there’s an even easier way to get the benefits of some extra cackles: making yourself laugh through simulated laughter.
https://www.popsci.com/diy/how-to-make-yourself-laugh/
Some other possibly related links:
https://www.mayoclinic.org/healthy-lifestyle/stress-management/in-depth/stress-relief/art-20044456
https://www.psychologytoday.com/us/blog/high-octane-women/201111/the-natural-high-laughter