I'm a math teacher, so I'm using a the graph of the trig function y = sinx as my model. Basically, this is a calorie cycling, perhaps carb cycling diet -- just a rough idea right now, needing to be fine tuned... The trig model is actually: y = asinx + c (There is more to trig than that, but these parameters are all that matter here.) a is the amplitude -- the caloric surplus/deficit. c is maintenance calorie level. At the peaks, you are doing a heavy weight lifting workout. At the valley, you are doing a fat-burning workout, be it cardio, high rep/light weight/low rest weight lifting, HIIT, or whatever. To blend this with HST, you lift every 48 hours (peaks) and do cardio on off days (valleys). For bulking, you make set the value of c above your maintenance. For cutting, keep c below maintenance. For a slow bulk, keep c below maintenance in the 15s, at maintenance in the 10, and above maintenance in the 5s. Drop the wave during SD. What do you think of the rough draft of this idea?