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Latest / The Copywriting Podcast with Fexingo: Sales Letters, Headlines, and Persuasive Writing

How Sentence Length Controls Reading Momentum

Lucas and Luna examine how sentence length — not just word choice — affects how fast readers move through copy and whether they convert. They break down a classic test from direct-response legend John Caples, who found that alternating long and short sentences kept readers engaged 18 percent longer than uniform sentence structure. Lucas explains the rhythm mechanics: long sentences build tension, short sentences deliver the punch. Luna shares how she used the technique to lift click-through on a landing page by 12 percent. They also discuss the risk of overusing short fragments and when to…

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