Every time a boxer gets punched in the head his brain moves vigorously inside his skull .
Every time a boxer gets punched in the head , his brain moves vigorously inside his skull .
Every time a boxer gets punched in the head , his brain moves vigorously inside his skull .
Mejorar la gramaticalidad de esta oración: Every time a boxer gets punched in the head his brain moves vigorously inside his skull . Producción: