We all know Cell Mass is expensive so I was just wondering if one serving is okay on off days or does it have to be two servings everyday like it is on training days? 40 Servings per container so I rather have it last a month, but if it has to be 20 days then so be it. In case anyone is wondering I know there are cheaper products out there, but I want to give Cell Mass a try and decide for myself whether its worth the money or not.