June 23, 2015 8:58 AM EDT

You see it on your newsfeed, your Twitter account, even sometimes through email from an older relative: a video that suddenly has millions of views. What is it about that video of a cat playing the piano or a man falling off a ladder that makes the Internet go crazy? Well, there are lots of reasons, but here are just 5 elements of a video gone viral.

Write to Arpita Aneja at arpita.aneja@time.com.

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