And I hate it that its true, because you really do need to invest a lot of gym time if you want to fully develop every part of your physique... I've tried just about every frequency per bp part there is and nothing makes me grow as well as every 48 hours, infact if I wait much longer than this the muscle trained seems to start to deteriorate and return to its size/strength it was prior to the last time it was trained.... which means I cant progressively overload it with more weight/reps next session. I dunno about you guys but I dont like the 3x a week setup, you cant really hit everything and have a well rounded physiqe with enough intensity when the volumes that high.... I like to split the workload in half and do the 1st half Monday second half Tuesday then 1st half again Wednesday etc.... I think Bryan Trains this way too? Interestingly this is how arnold trained back in the day from the info I've gathered from his book and other sources.... and some days hed training morning then again at night to split the workload up even further.... actually if you look around theres quite a few people who champion this high frequency training. The 1x a week thing never worked for me, yet it seems it does for some? I dont know whats up with that, do some people retain muscle far better than others? That's my current theory anyway. When i take a week off from training I lose an amount of size that is very noticeable yet other guys can go on a two week vacation and come back only slightly worse off... The nice thing is once you build the muscle up to a certain size/strength level you can cut back on the frequency to maintain its current size where you kind of build it up lose some between sessions if they are spread out further...then build it up again.... you just need very dedicated bursts/cycles where you are training it hard every 48 hours to take it to new size levels. Another thing I like to do when im feeling run down but still want to grow is run some bodyparts at high frequency while other bodyparts are put on the back-burner for a while and run at lower frequency.... this works especially well if you have some bodyparts that are lagging and others that are overly developed in proportion to the rest of you... It amazes me that more people havent figured this stuff out yet and 99% of routines you will see on the net have people training a bodypart just once a week.... I guess people just want to believe thats best, because lets be honest high frequency training is hard work and the average person would rather spend time watching tv, than put in the work to achieve their goals/dreams in life.