Jim Harbaugh says his daily vitamin is a steak

Oct 10, 2015; Ann Arbor, MI, USA; Michigan Wolverines head coach Jim Harbaugh prior to the game against the Northwestern Wildcats at Michigan Stadium. (Rick Osentoski/USA Today Sports)

Jim Harbaugh credits milk for helping him grow to 6-foot-3-inches tall.

Not surprisingly, the old-school Michigan coach also is a big fan of red meat.

“I take a vitamin every day,” Harbaugh said Monday night on his radio show. “It’s called a steak.”

Forget about the four food groups. When Harbaugh was asked by a listener how parents could help their son become a 6-foot-5-inch quarterback, he listed his four essential “natural steroids.”

“I truly believe the No. 1 natural steroid is sleep, and the No. 2 natural steroid is milk, whole milk,” he said. “Three would be water. Four would be steak.”(Steak) … it goes with everything.”

Steak. It does a body good. So does listening to Harbaugh.