Cat videos are good for your health.

Why are there more than 2 million cat videos on YouTube with an average of 12,000 views per clip? Myrick surveyed ~ 7,000 internet users to find that in general people felt less anxious, annoyed or sad after watching the clips, with an emotional payoff that was stronger than feeling of guilt over procrastinating. And, it certainly is cheaper than paying a shrink! Here is the abstract, which gives you an idea of the waffling nature of the text:

Anecdotes abound about the frequent use of the Internet to view cat-related media. Yet, research has yet to seriously address this popular culture phenomenon rooted largely in social media platforms. It is possible that viewing of online cat media improves mood, but this activity may also foster negative outcomes linked to using the Internet for procrastination. The present survey of Internet users (N = 6795) explored the correlates of viewing “Internet cats,” motivations for consuming this media, and its potential effects on users. It also tested a conceptual model predicting enjoyment as a function of the relationships between procrastination, guilt, and happiness. Results reveal significant relationships between viewing and personality types and demonstrate conceptual nuances related to the emotional benefits of watching Internet cats.

I can't resist throwing in a cat video as a bonus: