I am in M2W3, and I am noticing that my muscles are definitely getting bigger. However, they don't seem quite as defined as they did in M1, though they are still defined somewhat. I am just curious to hear what you feel were your individual experiences with each Meso. I want to have defined muscles and general leanness so the muscles show. I have lost some fat... it is certainly a process... I am loving STS and am trying to get a sense of what else I can expect for the rest of the program. I am wondering if the undulating rotation would make sense for me next so I can really shock my muscles even more. I think if I do the undulating rotation, I will also use many of my other Cathe strength dvds in conjunction with the STS dvds. Would this make sense? Thanks.