I suffer from horrible health anxiety and as soon as I stop worrying about one thing, another starts! I was wondering if anyone else had noticed my latest worry - when I sit really still, my head moves very very slightly - barely visible (husband says can't see it!) - is this normal? Looked up tremors on net and scared myself - not really a full-blown tremor - wondered if just normal body movement caused by breathing/heartbeat or whatever - a bit like fact that everyone's hands shake a tiny bit?! Can't stop obsessing about it!! Anyone out there shed any light. Thanks