Illustration Friday: Energy (late)

Though I wasn't able to turn this in on time I still wanted to finish it. I'm trying to build up more portrait and caricature illustrations for my portfolio and this is a good piece to be displayed there. Dean Karnazes is an ultra-marathoner who seems to have limitless, almost superhuman, amounts of energy.

Illustration was created with pen, brush and ink, with watercolors and acrylics.