Fetal studies are the only real evidence to show the peak of the rut, which by the way is when most doe deer are bred and not the best time to hunt. The seek and chase phase is the best time to be hunting. Lock down is a lull in activity during the peak of the rut, but as always anytime you can be in a stand is always good.
Saw an article on a study a few months ago said the lock down phase is not near as long as people think. As I remember 24 hours was about the longest period with any one doe for a buck. Lot more, wham bam thank you ma'am going on. Many twin fawns have different fathers. It had to be in Quality Whitetail Mag. or North American Whitetail as those are the only two I get. Anyone else read it? BTW , I believe them to be correct. Never bought into a lot of that phase stuff myself.