Question for @don fannucci
and everyone else who is deep into this program: how do you feel after each set? I was doing the program as written and I wasn't feeling anything. I switched to a 5x5 twice a week and now I feel a lot (in a good way). I do 5x5 every 3:30 seconds, so I get a long rest. I do 5 reps with double 24, and when I put them down, I feel like I've just run a sprint. Then, after the long rest, I feel ready for another one. I feel warm, mobile, and juiced up during and after this workout. Later in the day, I have a nice spring in my step, but I get beat up if I do the two sessions too close to each other.
I'm wondering what effect this should have over the long term and how it might compare and contrast with the program does.