Yes this is so true, I always immediately feel better when laughing. Even a forced laugh will almost become genuine and create the feelings of positivity 😊
It's weird, during some of my meditation sessions where I try to let go of the negativity of the days, sometimes find myself instinctively smiling and even having the tendency to just start laughing/giggling.
I guess it's like you said -
'It likewise encourages you to discharge outrage and be all the more lenient'
It allows us to release pent up energies
Laughter really is the best medicine 😆