D. Parrot, I am on Day 31 today and I am starting to get bored. This is unlike me as I did 11 rounds of X, X+, and X2 and I hardly missed any days (mostly due to traveling, illness, and camping). Monday, I substituted plyo X for plyo XT because I think it’s a better workout. Yesterday, I did Ripped for the first time and wasn’t very impressed. Seems like Force, but with a different tempo and order. I think the boredom reflects the quality of TapouT as a program, and also you seem to agree with me based on the feathers. Today I have Muay Thai. It’s just “meh.” Barely an upgrade from Ken po X. What do you do to cure boredom? Turn off the sound and crank up the tunes? Switch programs mid-flight??
The difference is that, from a performative standpoint, how the body responds to load is more than just what our muscle fibers do. Sarcoplasmic hypertrophy (the kind sought out by bodybuilders) is induced by higher repetitions, while myofibrillated hypertrophy happens at (much) lower reps with higher weights. Doing hundreds of 20 lb bicep curls, for instance, will indeed result in a larger bicep, and by extension a stronger one. But on the other hand, if you one day hope to be able to curl 100 lbs, you will never, ever get there by curling 20s until the cows come home.