There is no “bringing up his tris”, maybe his back. But not his tris. He has Ronnie Coleman-sque “horseshoes”.
Looking at Shawns physique he doesn’t look to be using any or much
SEO’s ( And very Good it is he isn’t ) - Though that is one option he
Could use to improve his tris... Lord knows what Phil & Roelly are using.
Yes at this time after all the years training it’s doubtful he’s going to add
Much if any more muscle tissue.