Lora for Wan Video to have the subject bounce their pecs.

Add pec bounce to your prompt.

I typically use Euler Simple with:

 High - CFG 1.5 / 5 Steps / 0.6 Strength

 Low - CFG 1.0 / 5 Steps / 0.6 Strength

I use this with the Wan Lightning Lora, 2.0 strength on High, 1.5 on Low. It seems like there's a slight desaturation effect when using the Lora that tweaking the Low weights can help with.

I've also tried setting the High CFG to 1.0 and increasing the strength. Sometimes better, sometimes worse.