Royals pitcher James Shields takes 'seventh inning stretch' literally, invents dugout yoga

First, there was simply yoga. Then there was hot yoga, aerial yoga, hip-hop yoga and even harmonica yoga. Now, thanks to James Shields, there's dugout yoga.

Here he is practicing foul line-facing dog during the seventh inning of Wednesday's Royals-Rays game: 

And exhale. Toss a ball. Inhale. Good.