Maha Gayathri Mantra

This is chanted by the boys and men who have been adorned with sacred thread. But now a days we are hearing it as a regular chant too. I am not sure whether it could be done that way. But when the boys and men folk of the house chant this with full sincerity, it gives benefits to all the members of the family and gives prosperity too to the family in whole. 
Om Bhur Bhuvah Suvaha
Tat Savitur Varenyam
Bhargo Devasya Dheemahi
Dhiyo Yo Nah Prachodayat