Are big smiles okay in meditation, high pitched sounds too?

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In some meditations i start having big smile (teeth visible) and also occasionally i unintentionally vocalize a high pitched ‘NNNNNNN’

Also my breath sometimes start being random or i hold unintentionally occasionally momentarily the breath because of the big smiles that start becoming sometimes almost laughing, but i manage to keep doing what i am doing in that specific meditation. My posture also start becoming rigid because of the big smiles (almost laughter) or i move slightly

Is this okay or i should train myself to keep face cold during meditations and avoid the above?

 

[Rroco88]

In some meditations i start having big smile (teeth visible) and also occasionally i unintentionally vocalize a high pitched ‘NNNNNNN’

Also my breath sometimes start being random or i hold unintentionally occasionally momentarily the breath because of the big smiles that start becoming sometimes almost laughing, but i manage to keep doing what i am doing in that specific meditation. My posture also start becoming rigid because of the big smiles (almost laughter) or i move slightly

Is this okay or i should train myself to keep face cold during meditations and avoid the above?

What you describe is normal. Don't force or stop a reaction of your body to meditation. I'm pretty sure smiling during a meditation happend to all of us at some point, even laughing happened to some of us.

It only is a problem if it distracts you from your practice, but in that case, you need to practice Void Meditation more and you'll be able to focus better on the meditation itself.