FYI, sitting just makes the eggs older. If the air cells are disrupted, separated completely, they will not reattach. Saddle cells aren't cells that have reattached, they were only slightly disrupted. The rest is completely not needed. There is no scientific reason to do it. I have been doing this over 3 years and have done so many hatches. The way it was handled during shipment(handling, temp exposure, etc) will determine your hatch rate(given that breeder stock is genetically competent and fertile) so sitting time only reduces your hatchability by making older eggs. If it makes you feel better, then eh, do it, but it's definitely not needed. I figure the eggs are already almost 7 days by the time I get them(sometimes more), why add another day?