Ok guys I am pleased to inform you that I cured perfectly from mysterious short of breath that everyone is talking about, and I got rid of it after several checkups with neurologist + abdominal doctors.
There is a reason triggered it first which is Acid reflux in my case, you may have different trigger, acid reflux later on had gone, but my body still didn't understand it.
After getting acid reflux due to several reasons among them:
1. Lying face down for massage for long time.
2. Wrong style in eating food.
3. Fast food like potato
4. Too oily food
And drinking too much cold drinks on an empty stomach, this all led to acid reflux after abdominal pain.

Now bear with me to understand what happened, acid reflux couses you to feel short of breath, which is well known to anyone, however, after getting medical attention and the reflux is gone, your body still in the same situation feeling short of breath, so it becomes a habit now, in the medical world, they call it 'a Tik'
Something that is similar to the word "syndrome", taking deep breath becomes something like a habit that you can't relax without doing it.
After understanding my situation, I was resisting the feeling to do it, the doctor told me to skip one every time, and compensate with another, until you minimize it to zero, but normal human being do it from time to time, I noticed it in my child while he is sleeping.
So this is all of it, I hope everyone shares my post and start doing what I did to get rid of it completely like I did.
Please note that too much responsibilities can make you do it from time to time, so control your anxiety level and understand that this kind of feeling the need to take a deep breath becomes a habit, the body doesn't feel ok if it doesn't do it.

Please try to breath from your mouth all the times, do you yawn a lot then?