Because everyone is busy from work, to the tim e of dinner, it is even later when the end of the day. People will also be willing to lie at home, watch TV or go online, do not want to exercise, and are even more reluctant to go out. But the period when peopl e started to excrete calciumis 4 or 5 hours after a m eal. If the dinner is too late, it will take less than 4 o r 5 hours