Breathing strangeness

Hi, i'm new to this forum as you can see. So if this pot is not in the right place, or if a thread like this already exists, please move it or merge it.

When i breath deeply for an extenden period of time strange things start happenoing. I've never heard enyone else mentuion this, so i thought i'd create a thread here.
If i keep up deep breathing (through my abdomen) for a few minutes i get a tingling sensation, starting in the limbs and face and spreading to the rest of the body. The feeling is abit like when your foot is sleeping. If i keep breathing my muscles will start to tense. Moving my gfingers becomes harder and muscles around my eye start to contract (shacking my vision) if i keep it up even longer, say fifteen minutes, the chagnging my facial expression becomes almost impossible and my face even starts to hurt. Breathing becomes hard.

Does anyone else get this? How can i prevent my muscles from tensing up so?

any answers are appreciated.

Does this happen at at rest or during exertion?

ah yes, i should have said. It only happens when i'm at rest.

EDIT: It doesn't matter how i am sitting though.

So... No clues, no one with similar experience?

Maybe you need to stretch a bit before you do this? You also might want to check your posture. If you aren't sitting properly then you may feel weird when you sit for prolonged periods of time.

i would have to agree on the streching part befor doing it but if you want to impove on it then keep doing it any promblem the human body has can be fixed with work.
Sencerly
The new Guy

Quote:

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Maybe you need to stretch a bit before you do this? You also might want to check your posture. If you aren't sitting properly then you may feel weird when you sit for prolonged periods of time.

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Stretching and posture might explain this tensing in my legs and torso. But in my face? in my fingers? I do not think posture is the explanation since i do not sit any differently then i would otherwise and it can happen in any posture.