Sylvester Stallone offered up an interesting behind-the-scenes look at "Creed" on his Twitter account, with a video that appears to show Michael B. Jordan getting knocked the hell out from a punch by co-star (and professional boxer) Tony Bellew.

I'm not sure if it's called "guts" to get up and keep filming boxing scenes after suffering a concussion. You didn't see Harrison Ford returning to Millennium Falcon after breaking his leg on the "Force Awakens" set. Perhaps movie sets should adopt a concussion protocol