“Shut up and train”

Entry in progress—B.P.
 
“No pain, no gain. Shut up and train” has been cited in print since at least 2009. “Shut up and squat” is a similar saying.
   
 
Twitter
Carlos Ed. Marin
@carlosedmarin
Manhã massacrante. Se tudo der certo, semana que vem, será pior. No pain, no gain - shut up and train !!!!!!! HAIL SATURDAY!
1:42 PM - 7 Nov 2009