It sure makes sense and is quite consistent with Phillips. Consider that everything, for the most part, that your muscles need to recover and grow must be transported by the blood. This is going to raise the elevation of substances in the blood that are normally not there - or at least not is such quantity. If you have to repair a whole bunch of different places along the muscle then the concentration is going to go higher and it only seems natural that it is going to have an adverse impact at some point.