The Green Bay Packers will arrive in Minnesota looking uncannily quick and athletic. More than halfway through a brutal NFL season, they look almost refreshed. They have scored 50 points in consecutive games, and 38 points or more in five of their past six.
There may be a hidden reason for their success, but it's not a mystery to the Vikings, who have adopted similar methods in an attempt to similarly evolve.
The Packers, like the Philadelphia Eagles and innovative coach Chip Kelly, have altered their regimens and schedules this year to energize players.
In training camp, the Packers took frequent water breaks, while handing out energy bars or jells.
During the season, the Packers have altered the traditional NFL workweek. Consider their schedule during a week in which they play Sunday.
On Friday, when most teams hold their last full practice of the week, the Packers instead hold meetings and have their players undergo deep tissue massages. On Saturday, when most teams hold literally-named walk-throughs, the Packers, like the Eagles, practice, hoping the activity will rev their players' muscles for game day.
The Packers still bring their players in on Monday, the day after the game, and schedule Tuesday as a day off, while the Eagles make Monday a day off and begin game week on Tuesday.
Vikings coach Mike Zimmer is familiar with the Packers' and Eagles' routines, and has toyed with his weekly schedule during his first season on the job.