How can I learn to do what the people do in exercise videos?

Question by BNM: How can I learn to do what the people do in exercise videos?
I rented all kinds of exercise videos from the library and I just cannot do what they do. I cannot get into the positions they do and by the time I figure it out, they have gone on to the next exercise.
Would it still benefit me if I am at least trying, even if I cannot do what they do?

Best answer:

Answer by ME
Put the video in SLOW-MO.

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