Primal Grow Pro It is important to do understand that when you are on the search for the best bodybuilding workout routines. That a workout is only as good as the time it takes your body to adapt to it. If you are in your first year of training this isn't so important. But if you have been training any more than a year, you need variety in your bodybuilding workout routine. (this is probably why you are reading this so excuse my stupidity).