A Clever Technique for Breathing Before a Presentation

I love this tip for helping your breathing before a presentation.

• Take a good abdominal-diaphragmatic breath about 10 seconds before you are going to start your presentation.
• Take another good abdominal-diaphragmatic breath just before you begin your opening line.
• These two deep breaths will build your air supply. 
• This will allow you to take smaller breaths within your presentation.