What actually gets heavier
The weight on the bar is the only number that has to go up.
You want to lift more than you lifted last month. Jerry works on three time scales to get you there: the set you are standing over, the week you are in, and the months you have been at it.
Three time scales
Strength is built across a set, a week and a run of months. He works all three.
Inside one set
He watches the reps land, then writes the next one.
You finish a set and tell him how many reps you had left. If you hit failure at the load he asked for, the next set comes down by five percent, or to the next weight down that your plates can actually make, whichever brings the weight down more. That brake fires inside the session, not next week. Close to failure is what grows muscle. Getting strong is mostly load and clean reps, so on most heavy sets he has you stop with a few reps still in the tank. In a planned heavy week on a strength program, the main lifts drop to sets of one or two reps, with at most one more rep left in you.
Across one week
Enough work to grow, and a stop before it digs you into a hole.
Muscle comes from doing more than your body is used to and then recovering from it. The second half is the one people skip, so Jerry counts what each muscle has taken across the week and cuts the session when the arithmetic says you are borrowing from next week rather than earning this one. Some weeks he asks for less than you came in willing to give. He watches the floor as well as the ceiling: below a minimum amount of work each week a muscle gets no growth signal at all, and he will tell you which one is under it.
Across the months
The reps come first. Then the plate goes on.
In a normal week, the weight moves on your reps and not on the calendar: hit the top of the rep range once at the effort he asked for and the plate goes on, after which the rep target drops to the middle of the range and the climb starts again. That is double progression. Outside the main lifts of a program built for strength, or for strength and size together, finish every set he asks for two sessions running and he stops waiting: he takes a bigger step, never more than a tenth of the weight in a week, and goes back to small steps at the first set you cannot finish. In a planned hard week (an overreach) or a recovery week, the plan sets a percentage of your max instead and what he knows of your strength turns it into kilograms. In a hard week, the heavy set on a main lift is never lighter than your own recent sets show you can handle, counting only the sets where you typed in yourself how many reps you had left. He tells you which week you are in. What you watch climb is your estimated one rep max, the most he thinks you could lift for a single rep, and the word estimated is carrying real weight there. Nobody measured it under a bar. It is computed from the loads, the reps and how many more reps you said you had left.
The claim we will not make
There is no before and after photograph on this site.
There are no results from testers yet. The test group has not trained long enough, so any number here about how much stronger anyone got would be invented.
When the data exists it goes on the record beside the accuracy figures, and it will say how many athletes it did not work for. Until then you get a narrower promise that holds on your first session: every load he asks of you is written down before you lift it, with the reason attached. If he is wrong about your body he says so.
Where to start
Train for a few months and check his work.
Log real sets for a few months and read what he wrote down before each one. It is free while it is in testing, and you can have it on your phone this week. If you want the loop itself first, it is on how it works.