It changes the character's body shape without destroying the model's characteristics, as shown in the example image. (Doesn't work for realistic models)

The strength of the effect can vary depending on the model and the LoRAs mixed in, etc.

Stable for most models up to ±1.5(max 2.0), beyond that, there may be issues

It can act as a secondary to some of the functionality of the Age slider , and can still be useful when building models.