"Laugh, Laugh, I thought I'd die!"
If I didn't have the training atmosphere where I could giggle once in awhile, I probably wouldn't train. It eases tension a lot. It's a lot better than crying, that's for sure.
Serious training can be tempered with joyful training and still be very effective in the learning process. I'm all for a happy medium where the two can be mixed.
I don't laugh at others, I laugh at myself