Monggo- Vigna Radiata

File:Mung beans.jpg
Today is Friday, it is one of the practices of Filipinos to cook monggo beans as viand for lunch. I don't know the reason behind and i have also asked other folks but can't tell me why we must have to cook monggo particularly this day only. Can anyone of you who can tell the reason why?
Scientific name of monggo is Vigna Radiata. This is very popular in the Philippines. It is mainly cultivated here in the Philippines. India, Bangladesh and Pakistan. This monggo beans is rich in protein. We cooked and served with fried fish and fresh tomato.