The EGR system routes many of the exhaust gases (6 ? 10%) through the EGR valve, last on the Intake System, and in the end in the combustion chamber. The exhaust gases are inert i.e. they don't burn within the combustion chamber; also, the exhaust gases use up a number of the space which could preferably be taken with the intake air. This decreases the volume of intake air available for the combustion process during each Power Stroke; which experts claim decreases the peak combustion temperatures. This leads to lower NOx emissions. After completing the story, the married women wait for the moon to come and so that they can open their fast. The fast is really a tough one and the women keeping it for the first time, needs to be motivated by their husbands, so that they can fast for the whole day. The husband pleases his wife with special gifts, which makes her day special and brings smiles on her face. After the moonrise, the bride performs a prayer, with karwa thali, and water and then prays for the successful closure of her fast. Then she is fed water and sweets by her husband, by which the bride breaks her fast and eats a lavish dinner. These days, many unmarried girls, also fast for their, would be husbands and pray for their longer lives.