I remember primary school, we had a subject once a week, where you brouht a sports bag but with spiky-massage balls inside and a blanket. Than everyone was lying down and got massaged from another student with these balls, than the teacher was playing calming music while telling a story where you should focus while being massaged. Than after 15 minutes you switched so the other kid was massaged.
we did this from 2nd to 4th grade lol. I'm not kidding