Cardiology technician Roxana Penayo (L) watches cardiac patients during a tango workshop in Buenos Aires August 6, 2012. Tango lessons are added to the rehabilitation routines, which include tape and bicycle exercises, for patients who suffered heart attacks, heart disease or have heart pacemakers, the head of rehabilitation in the Paroissien public state hospital, Alberto Marani said. REUTERS/Enrique Marcarian (ARGENTINA - Tags: HEALTH SOCIETY)