From this 11W Article: 

http://www.elevenwarriors.com/ohio-state-football/2015/08/57658/ohio-states-braxton-miller-has-a-quiet-confidence-about-himself-in-new-role-at-wide

“The biggest thing guys struggle with when they first move positions is they struggle with the amount of running we do. Quarterbacks, they’re not used to that,” Smith said. “Braxton had a great first two practices and there was a transition, but then his legs were blown out. He didn’t look that great, was sluggish, but then had his best practice that he’s ever had [Saturday]. I think he looks really good. Obviously, he’s a great athlete, but he’s picking up the position.”

 Brought a question to mind - will the training to develop WR conditioning affect the burst and ankle breaking explosion Brax is used to in a negative way?  Please - I'm not doubting Coach Mick, just wondering if there is a trade-off in performance...

I ask because I don't know - I'm sure there may be someone in the Buckeye Nation who does.

Here's some food for thought: http://www.nerdfitness.com/blog/2009/06/09/fast-twitch-vs-slow-twitch-what-kind-of-muscles-do-you-want/