the window for nutrient uptake post workout is between 30 and 45 minutes. I think what this is saying is that your muslces, if they are not taken care of properly, continue to break down.
researchers discovered that resistance training caused a marked decline in as blood amino acid levels and as these levels declined, muscle protein breakdown increased
so if you dont replenish those amino acid levels, your pretty much screwed. so take in that pwo shake, and eat another meal an hour to an hour an a half later.
I don't do this for my family, my friends, women, accolades, pride, or ego. I do it for me and no one else, its just part of who I am.