She throws up simply because she's so nervous.
And she's in good company too when it comes to be absolutely petrified. Pablo Casals, Arthur Rubinstein, and Luciano Pavarotti and many other performers have experienced bouts of stage fright. And don't be too surprised if you develop a very large dose of stage fright too.
I wasn't always scared at a product launch
Back in 2002, when I first wrote and launched the book, The Brain Audit, I didn't expect anyone to buy it in a hurry. When the first person on our list bought the book, it actually took me by surprise. But since then it can be reasonably scary to launch a new product/service.
Now consider this...
I'm no newbie when it comes to launching a new product. At Psychotactics, we have more than a dozen products for sale. We've done numerous courses and many of the courses fill up in less than 55 minutes (yes, you read right the first time). Some courses have a year-long waiting list. And still, the fear isn't something that you can push away. I'm still as nervous publishing a book or putting out a new course as I was back when I first started.
Which means that if you've got a case of the jitters you're doing OK
All of us get scared from time to time. And some of us get scared every single time. It doesn't matter how good your product/service is. It doesn't even matter if you're super-famous. The feeling of nervousness swells up and swarms through you.
So the next time you're nervous at a product launch, don't bother trying to relax. Just go with the flow. Once the product/course is launched, things start to happen and the nervousness just goes away.
Or as Adele says: The more nervous I am, the better the show!