Whyt does my character mesh do this??

I’m using UE 5.7 and I’m going through a cinematics course, animating with metahuman. I am using the provided animation and applying it to the provided mesh. The animation works but my character does this weird stretching throughout the animation. Any idea what causes this?

Hey there @Prospero000! Welcome to the community! During the course, did you have to retarget the character to another skeleton?