Please vote in the poll after looking at all of the exhibits.
If you watched the game on TV, then you saw Exhibit A. This is Fitz taking off his shirt (note that he only began with a T-shirt and shorts) and doing the worm during the pre-game on a 37 degree day:
Here is Exhibit B, a video detailing the new S&C and Training programs
Here is Exhibit C, a video talking about the 5:30 am conditioning programs he instituted in the offseason
And here is Exhibit D, an article on Deadspin with stories about a former Harvard Strength and Conditioning coach, who I have it on good authority was actually none other than Mr. Craig Fitzgerald. Seriously read this if you haven't. Some absolute gems.
Craig Fitzgerald: American Hero