Why We Knock on Wood, The Woman With the “Perfect Butt”, How a Heart Attack Works, and More

In this week’s “best of” our YouTube channel, we look at why we knock on wood, the woman who is widely deemed within the jeans industry to have the “perfect butt”, why black cats are considered bad luck, the blind man who invented cruise control, how a heart attack works and 10 amazing facts. Click here to subscribe to our YouTube Channel for many more videos like this.

Why Do We Knock On Wood?

The Woman with the “Perfect Butt”

Why Black Cats Are Considered Bad Luck

The Blind Man Who Invented Cruise Control

How Does a Heart Attack Work

10 Amazing Facts #25

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