Ed. To demonstrate that Coach Harbaugh isn’t the first head coach to peel and flash the washboard/guns, a repost from January 2014:
Just in time for the polar vortex of death, here’s what the doctor ordered. How about a look at a shirtless General Bo out for a run in the summer of 1976, as featured in the Sunday Magazine?

Thanks to the keen eye of Dr. Sap for spotting that on eBay, up for bid right now.