After thinking about it - I honestly believe the more a beginner trains the better - I would nearly go as far to say a beginner (if possible due to doms - and would prob have to work upto it) - should be training anywhere from 5-7 days a week - and always doing some form of exercises even on a "rest day" be it a walk, some sprints etc - of course still focusing around "core lifts" - but this is where you gain the most, this is where food, training, supplements will make the most difference - when you 1st start - if the person was upto it I would be getting them training each bodypart twice a week, mod sets/reps, high intensity.