There are those times when you are scheduled to make a presentation, but you simply do not feel up to it. Not at all. Not for a minute. So what do you do? Do you phone it in? Cancel and reschedule? See if you can get a replacement?
Here are real scenarios, most of which I have personally experienced, plus what the best presenters do even in the worst of times. It's tough, but this is the mindset to have when the absolute last thing in the world you want to do is make a presentation!