Does chin tucks really work?

[cannot see myself]

I've seen a lot of people that claims that chin tucks really helps to imporve your face, specially your mandible. Is there any real information about it?, anybody has really tried it?

 

[KSK_Gorgasali]

Bump

 

[straighthairflockz]

never tried it but the idea sounds stupid so it's probably cope and not working