so many will say you need to and i can see that... however ive ran it many, many times now and ive split it and then the next time didnt... no difference whatsoever in results... next time, just took all at once again, no difference... ive coached many people on it, no difference whatsoever between splitting and not.. it wont hurt if you want to do it that way, and there is merit there, but through PLENTY only of personal as well as many years of coaching it, three is not much of any difference