We know that it is impossible to gain muscle and lose fat at the same time. Everybody states, "Not for newbies, though." Well, it is impossible there too. The body just can't do it. What I think must be happening for newbies is that the stimulus of exercise/diet on their unconditioned bodies causes a reaction of frequent shifts between muscle building and fat loss. It has the apperance of a simultaneous transformation, but really, it's discrete and alternating steps in both directions: Kind of like the difference between a ramp and stairs. I'm curious about how that happens. Does it shift on a day to day basis? Hour to hour? Moment to moment? If they can burn fat in a workout for several minutes, then later build muscle with an energy surplus, somehow cause by feeding off of the excess fat(?), then burn fat again shortly later due an increase in the metabolism, etc...that would explain it. So the next question is, can the trained and conditioned body be forced to do this too? Isn't that what McDonald's UD2 tries to do in shifting between depleting and building phases every couple of days? (I haven't read the book.) I have come to the realization that I don't like the traditional bulk/cut approach. After I get to a desired bf%, say 10%, I don't want to do it again. I may do it again if that's all that will work for me, but if I can find a way to add a bit, then lose a bit, etc. without big changes in overall bf% and appearance, then that's what I want to do. To make frequent shifts, I speculate that overfeeding aroung lifting days and underfeeding around cardio days is the key. And I'm not talking about gross over and under feeding, just a couple hundred calories. The weekly change in calories would be only +/- 100cal or so... This type of thing would work too well with HST, though. It would screw with the lifting frequency. I have experimented with over/under feeding every other day, and a.) I don't like it, and B.) I t was hard to tell if it was working at all. So instead of moment to moment, or day to day shifting, what I'm thinking is use a tapering diet during the first 3 weeks of a cycle, ramp up calories in the 4th week, then overfeed during the 5's and post 5's. SD would consist of a gradual shift from the overfeeding back down to tapering for the next cycle. I'm imagining a loss of 3 pounds the first three weeks, and a gain of 6 pounds in the last four weeks. The desired result would be an increase of 3 pounds with almost no change to body fat%. To those who are used to bulking, that isn't much of a gain for an entire HST cycle. It looks like I'm not optimizing the potential of HST for muscle growth -- and I'm not. But if it works even close to speculation, I might never have to increase my pants size, or do months of dieting/ cutting ever again. Now is this all pie in the sky dreaming of the "perfect" workout and diet plan? Yeah, but who doesn't do this? Once I reach my target bf%, I'm going to give it an honest try.