Hi Cyd,
I am so sorry, I misunderstood your question. I thought you wanted to sub for STS
Total Body (LIS/STS TB
1 month rotation) not the entire STS series upper body. With the
LIS/STS 3 month rotation, you have all three Meso's from STS incorporated. Meso 1 is light weight/high reps, Meso 2 is moderate weights, Meso 3 is heavy weights/low reps (more along the lines of 4DS). Of course you can still do the rotation with 4DS UB/LB if you prefer, I'm just not sure if your results would be
even better including lower weight/higher reps.
I unfortunately do not have experience with this particular rotation, as I just recently acquired STS and STS TB. I did however do the
Nov LIS rotation &
Dec hi/lo and got great results, losing inches and lbs.
I also have 4DS and love it! Using heavier weights has given me some nice muscle definition
Perhaps you can ask your question in the STS forum, where people have done this rotation as well as the STS program.
Good luck!
Natasha