That's pure nonsense. Let me clarify this for you to a very simplistic level:Once again, it is a nonsensical question. Here is an analogy:
draw a straight line between two points and also draw a curved line between the two points. Explain how the 'relative rate of arc length' changes during the different parts of the line.
The twins paradox:
1. your claim is that the ageing of the traveling twin relative to the stay-at-home brother is slowed down
2. the twin returns home and is then again ageing at the same rate as his brother
YOU make the claim that his ageing slows down.
YOU must also explain:
how and when does his ageing speed up again to match his brother's rate?
YOU HAVE NO ANSWER, you fail miserably.