Rocking chair for leg / core exercise?

I've been thinking a rocking chair might help things. If I sit in one I can rock using both my legs and core, but I've never really tried it consistently. My thing is I don't want to ask someone to help me transfer unless I know what I'm doing will be beneficial. I was thinking sittin in the rocking chair and putting my feet up on a footstool might allow me to get more of a total gym like movement and be a way to strengthen and stretch my legs. Thoughts or ideas?

Thank you.,
Ian

Rocking chair for leg / core exercise?