Inclusion criteria:
5-6 year old children who has been registered at one of the chosen kindergartens
Being Iranian
Not being immigrant
Children without congenital diseases or special diseases such as diabetes, cardiovascular diseases, metabolic disease, liver disease, kidney disease, epilepsy and psychiatric disorders
Not being on a specific diet
Exclusion criteria:
Children with congenital diseases or special diseases such as diabetes, cardiovascular diseases, metabolic disease, liver disease, kidney disease, epilepsy and psychiatric disorders
Being on a specific diet
Refuse to participate in the research
Getting sick during the research
Losing parent/ parents during the research