Only one way sounds wrong when the industry sells dozens of fat loss methods, so the claim begs checking. The title never names the way. The split shows the two states the viewer knows, where they are and where they want to be.
How the packaging works
Title
The title claims a single mechanism and keeps it secret.
Thumbnail
The image contrasts the soft belly with the lean one the viewer wants.
Remix this
When everyone in your niche sells many answers, claiming there is really just one cuts through. Only make the claim when your content genuinely proves it, or the trust cost outlasts the click.