c'mon really? pumps equal stretched fascia equal growth... you cant be more concerned over the potential of further growth over if its a good combo or is bad and not being worth it to bother trying from negative results or cancelling out etc... personally, I'd go extra mile and invest in citirulline , bcaa's, gutamine, pain killers, whatever to try to bear the pumps just to reap the benefits than not invest cuz of a little pain/discomfort... no pain no gain?