How to work out next block's loads from one working set

Start from a set they actually did

Say your client benched 75 kg for 6 reps, four sets. The input is a set they really completed, not the one you wrote for them. CoachBlocks does not blindly take the latest entry. It prefers completed weighted work outside a lighter final week, then uses the strongest set from the latest block that contains that work. The weight, reps and sets they completed stay together.

If the only completed evidence is from a lighter final week, CoachBlocks still uses it rather than nothing. When normal working-week sets exist, they take priority because a deliberately lighter set is a poor anchor for the next block.

You do not need an estimated max. Working as a percentage of a real set keeps every number near a weight the client has already handled, which is the point.

Keep the reps and sets, move the bar

The reps and sets are yours. You wrote 6 reps because you meant 6 reps, and a method that quietly rewrites that is one you then have to check. So they stay fixed and only the load changes.

A four week block that works from one set looks like this, as a share of that set:

• Week 1: 95 per cent. Just under what they did, so the block starts by settling in.
• Week 2: 100 per cent. Match it.
• Week 3: 105 per cent. Go past it.
• Week 4: 85 per cent, with one set fewer. The lighter week.

Round to plates, then check the block still builds

On the 75 kg bench that is 71.25, 75, 78.75 and 63.75. None of those are loadable, so round each to the nearest 2.5 kg: 72.5, 75, 80, 65. That is a block.

Now do the same for a 15 kg dumbbell curl. 95, 100 and 105 per cent are 14.25, 15 and 15.75, and every one of them rounds to 15. Three identical weeks that look like a working block on the page. Nothing in the arithmetic tells you it happened, and it happens on every lift under about 25 kg, which for most clients is most of the accessories.

The fix is a rule, not a formula. Week 1 never asks for more than the set they did, and the last building week always clears it by at least one increment you can actually load. The curl becomes 15, 15, 17.5, 12.5, which is what you would have written by hand: hold, then take the next dumbbell up.

Doing it for a roster

Across a roster, the same lookup, percentage calculation and equipment rounding repeat for every weighted exercise in every new block.

That is the part CoachBlocks does. One set goes in, the block comes out with every week rounded and the tie caught, and every cell is still yours to change.