Has anyone ever needed to "break in" their drag radials?

I have heard that the first burnout on a brand new slick/drag radial should be, shall we say, slightly excessive?
After that, the drag radials need only a couple seconds of burnout.
I do not know if that is true.
I see lots of burnout on the you tube vids of no-prep and street races. Probably to get some rubber down to race on.