Inclusion Criterias:  Being healthy To be older than 4 weeks To be less than 1 year old Parents' consent to participate in the study To be born between 38-42 gestational weeks To take part in the routine vaccination program of the Ministry of Health  Exclusion Criterias:  Being a sick infant To be over 1 year old Have taken analgesics in the last 4 hours To be born lower than 37 gestational weeks Parents' don't consent to participate in the study