Module 3 · Lesson 3.2

Fix Your Sentence Rhythm

3 min read · Updated

Read an AI paragraph aloud and you'll hear it: da-da-da-da-da, da-da-da-da-da. Every sentence is about the same length and built the same way. It's not wrong. It's just tiring, like listening to someone talk in a perfectly level voice.

Fixing rhythm is the fastest way to make a draft feel human, and it's the change that shows up most clearly in burstiness scores.

Spot the problem

Paste your draft into the AI detector and look at the sentence rhythm chart. If the bars look like a fence, all roughly the same height, you've found the problem. You can also do it by hand: count the words in each sentence of one paragraph. If they all land between 15 and 25, the paragraph needs work.

Five moves that fix it

1. Add a short sentence

After a long sentence that explains something, add a short one that lands it. Two to six words. "That was the problem." "It worked." "Nobody noticed." Short sentences carry emphasis because they break the pattern.

2. Let one sentence run long

The opposite move matters just as much. When you're telling a story or listing steps that belong together, let a sentence keep going with commas and "and", the way you'd say it in one breath, so the reader feels the momentum of the thing you're describing.

3. Split a medium sentence in two

AI often joins two ideas with "and" or "which". Cut at the join. You get one short sentence and one medium one, which already breaks the fence.

4. Use a fragment

Good writers break the grammar rule now and then. A fragment can stand alone. Like this one. Don't overdo it. One fragment per few paragraphs is plenty.

5. Vary how sentences start

AI sentences often start the same way: subject, verb, object. Mix in a question, a time phrase ("By Friday, …") or a sentence that starts with the result. Openers matter almost as much as length.

A worked example

Before · lengths 17, 15, 15, 16 Our team decided to move the weekly planning meeting from Monday morning to Tuesday afternoon this quarter. The main reason was that people were spending Monday mornings catching up on weekend emails. We noticed that the Tuesday meetings were shorter and that people came with clearer priorities. Overall the change has been well received by the team and we plan to keep it.
After · lengths 14, 3, 17, 8, 7 We moved our weekly planning meeting from Monday morning to Tuesday afternoon this quarter. Mondays weren't working. Everyone spent the first two hours digging out of weekend email and showed up to planning half-there. On Tuesdays, meetings run about 15 minutes shorter. We're keeping it, at least until summer.

The facts are the same. The second version has a three-word sentence that does the work of a whole explanation, a longer sentence that tells a small story, and an ending with a bit of personality.

Don't forget paragraph rhythm

The same idea applies one level up. AI tends to write paragraphs of equal size, often three or four sentences each. Real writing has a one-line paragraph now and then for emphasis, and a longer one when an idea needs room.

On screens, shorter paragraphs are easier to read anyway. Two to four sentences is a good default. Break that whenever the content asks for it.

Rhythm is about variety, not short sentences. A page of four-word sentences is just as monotonous as a page of twenty-word ones, and it reads like a bad ad.
Try this

Take the paragraph you edited in lesson 3.1. Write the word count of each sentence above it. Use at least two of the five moves until the shortest sentence is under 7 words and the longest is over 22. Check the rhythm chart again. Then move on to lesson 3.3.