Our current start time here in Longview, Texas is 5:00am and the drivers start their PCM at 9:00am. I usually stay about 20 minutes extra to finish up bulk trailers.
I'd say I got used to it pretty quick cause I started during the Christmas season. 5am is our usual start time and it's pretty easy to get up that late, a lot better than when we used to have to be there by 3am.