There's obviously no "off" in the offseason for Baltimore Ravens offensive lineman John Urschel.
After ending the season as the Ravens' starting center, Urschel announced on Twitter he is starting his Doctor of Philosophy degree at the Massachusetts Institute of Technology. He is listed as a graduate student for Spectral Graph Theory, Numerical Linear Algebra and Machine Learning.
After reading that, it feels like Urschel is more likely to be a character on The Big Bang Theory than a lineman pushing a 340-pound nose tackle off the line of scrimmage.