One from the reasons people send me a email could be because of insufficient air in the podium, in the webinar, or even in a sales presentation. So I use a question in your case.

Do you ever experience breathlessness a lot more conversation with family, friends or colleagues?

More than likely, the way to go is No unless you're very excited.
So what is happening in public speaking that causes one to gasp for air try to think that you're running on empty? There are three possibilities.

You are nervous. Nervousness can sap your oxygen.
You still believe what you learned in elementary school: you're not in a position to breathe unless you visit some type of punctuation.
You do not make sure to breathe.

Nervousness may be your closest friend or your worst enemy in public areas speaking. If it is in control, it's certainly not assisting you given it increases your panic. This, consequently, places you inside the flight or freeze mode. In either one of these simple states, your upper chest breathing feeds your panic rather than alleviating it.
While your 2nd grade teacher could possibly have stated to not require a breath until you located the final in the sentence, she had her reasons for saying so. The problem came later in college when you had several lines of sentence no punctuation. You have something referred to as the 'speaker's license.' Similar to the 'writer's license,' the previous implies that you are able to breathe almost anywhere is any sentence. Just as you supplement your air supply in normal conversation, so too in case you supplement your air in public areas speaking. What happens with the lectern, by way of example, is that we delay until we are totally spent before gasping for any quite a bit of air which actually creates more tension than relief. The secret? Supplement your air supply before you run out of computer. Another way to see this is usually to maintain your 'balloon' filled as an alternative to empty.
It is interesting that the another thing many novice public speakers don't believe to do is usually to breathe. Breathing may be the last deliberation over their mind when, actually, breathing needs to be one of the priorities. When https://www.livestreamingsydney.com.au/ pause, please take a quick breath. Before you open your mouth to speak, require a breath. And, if you want to complete it effectively, discover how to breathe while using support of the diaphragm. It may be the best method of controlling your nervousness of any type of presentation.