According to a survey from PR Newswire , more than half of people plan to start their holiday shopping on Thanksgiving or earlier.

And 80% of people plan to spend MORE on Black Friday this year than they did last year.  41% say they're not looking for anything specific on Black Friday . . . but prices are so low, they might as well shop.

Here are the four things people say are most stressful about Black Friday:

1.)  One in three get stressed out over the thought of so many people packed into one store.

2.)  28% are worried the store will run out of what they want.

3.)  26% feel stress over competing with other shoppers for deals.

4.)  16% say there are so many deals, it's overwhelming.