Former New England Patriots tight end Rob Gronkowski discussed the toll his NFL career took on him physically and mentally during an interview with NBC News on Wednesday.
Gronk mentioned that he had "liquid" in his head as a result of the punishment he endured:
NBC News NOWGronk on Andrew Luck’s decision to retire, his own battles with injuries, CTE and more...@RobGronkowski sat down with @phillipmenaNBC https://t.co/ENjrfSXjBA
"No lie, I felt my head, I used to have liquid," Gronkowski said. "It used to be thick, like, my head used to be thicker—a centimeter of liquid in some spots.