There are a few things we know for certain about Jim Harbaugh.
1.) He's intense.
2.) He has an affinity for khaki pants.
Here we can see Harbaugh in his natural environment, running a game at a high school football camp in Alabama in video captured by Mark Snyder of the Detroit Free Press displaying both known characteristics. Shirtless.
Michigan signed Harbaugh to a seven-year deal worth at least $40.1 million after he and the San Francisco 49ers mutually agreed to part ways following the 2014 season.
The 49ers reached the postseason in Harbaugh's first three seasons at the helm, which included a trip to Super Bowls XLVII and two other NFC Championship games.
As a college coach Harbaugh has an overall record of 58-27 in three seasons at San Diego and four more at Stanford before he was scooped up by the NFL.
Michigan was looking for a spark in hiring the Wolverine alum after finishing 5-7 last year, fourth overall in the Big Ten.
Harbaugh thus far hasn't disappointed.
Follow Matt Wilhalme on Twitter @mattwilhalme