Drumming

Remember drumming on your or a friend's chest and talking at the same time?  It made that wonderful vibrating sound and sounded so funny.  Well, little did we know that this massage technique (called "tapotement") yielded therapeutic benefits.  The light pounding (usually on the back) has a stimulating effect during the first 30 seconds, but it then has a relaxing effect over the long term.  No wonder we kept doing it!  (And we sounded funny, too.)