Humans laugh before we talk. Laughter is an inevitable part of daily life, but do you know why you do it? Laughter has fascinating evolutionary roots and some even more interesting psychological effects.
mind-body
Explore the history and psychology of toilet paper, from ancient tools to its pandemic symbolism and global hygiene impact.
Smiling is deeply etched into our DNA, probably beginning 30 million years ago among our primate ancestors. While there are many variations of the smile, not all of them pleasant, you can use a smile to your own benefit.
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