ok the consensus of the majority is that training bodyparts more than once a week is overtraining, i also only train bodyparts once a week thought i dont totally agree doing more woudl be overtraining. but this also makes me think, look at the people that are using certain bodyparts every day and are so developed, for example fat people always have huge calves from walking around on them all day, people that work on cars usually have big forearms from alwaysl uisng like wrenches and tools, swimmers usually always have big legs from swimming everydayusing thier legs to beat the resistance of their body and water, gymnasts always are fully developed from every day using their body as resistance on the exercises they do, the list goes on and on. this makes me think doing bodyparts twice a week with above average intensity and sufficient eating habits would be ok.