More specifically, are there any exercises to relax the muscles in your face that allow you to smile? When I go to a place like school I just tense up and my smiles end up looking lop-sided and when it feels like I'm smiling I'm not. My brother and I also sort of walk with our heads and neck sort of stiff and straight and it looks sort of odd, like we need to loosen up or relax, but we can't. I know these sound like weird problems but I wanted to know if there's any exercises to help loosen us up in these areas. Actually, I think exercises that are meant to loosen up maybe other parts of my body could help here too. Thanks.
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We're twins and we share this account. We are both currently a Green belt in Tae Kwon Do.