Both parties need to establish trust over the course of a few weeks by communicating, before meeting in person. (jewishdatingsite.net)
As of a few weeks ago, we've got our stamp of approval, so we're officially certified and ready to do this thing! (jillianlauren.com)
They add 50 calories per week and slowly over a period of a few weeks go into «maintenance» and then over some more weeks arrive at a [caloric] surplus. (physiqonomics.com)