NO DAYS OFF! Belichick said it, Gronk lives it.

Gronk was on the road in Texas and needed to get a workout in so he snuck onto a high school football field and got it done!

Pretty funny stuff, Gronk and his crew squeezed through a semi-open gate to the Southlake Carrol High School football field, practiced or worked out for a bit and then they left, but not before thanking the school for letting them 'use' the field. Check out the video!