MILWAUKEE (AP) — The hundreds of construction workers putting up the new Milwaukee Bucks arena stretch, bend, squat and wiggle — all before 7 a.m. The daily loosening-up regimen is a priority for Minnesota-based Mortenson Construction, which is managing the $524 million project. Mel Langlais, safety director for the company’s Milwaukee Operating Group, said that the morning sessions aren’t just about stretching. Langlais says they are a cultural thing that set a tone for the rest of the day. Mortenson started daily stretching on its job sites about 20 years ago. Langlais says the company saw immediate benefits including a reduced injury rate. They even have workers do a second session after the lunch break.