Nature has a warning for adults who stopped playing and it is deeply unsettling

Did anyone else's parents tell them that if they sat in front of the TV all day their brain would turn to mush? Turns out there might be something to that, courtesy of one of nature's strangest creatures: the sea squirt.

The adult sea squirt is a tubular creature which is the couch potato of the sea. It spends its youth swimming around, exploring, navigating the world. Then it permanently attaches itself to a rock, and since it no longer needs to think or move or find food, it...

drum roll please...

it digests its own brain 🧠🤯

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Stuart Brown, who wrote the book Play, calls this "use it or lose it." A capability that goes unused becomes something the body eventually discards.

For most animals, play stops when adulthood begins because adulthood means danger, and danger means there's no time for games. But humans never got that memo. We kept playing, kept being curious, kept exploring, and it turns out that's exactly what kept our brains sharp enough to outlast everything else.

So why do humans keep playing into adulthood? Well, the answer is simple: it's really beneficial.

🎲 Lower rates of cognitive decline as you age

🎲 Stress drops faster than almost any other activity

🎲 You build real trust with people faster than any team meeting can manufacture

🎲 Your brain stays plastic, adaptable, and open to new ideas

🎲 You recover from setbacks more quickly

We are designed to be lifelong players. And every time we convince ourselves that play is a luxury we'll get to eventually, we prove our parents right – our brain really is turning into mush without play.

And this is especially true at work. Play isn't the opposite of work, it's actually what makes work better. Teams that play together think more creatively, trust each other more, and honestly just get more done.

So the next time someone tells you play is a waste of time, tell them the sea squirt disagrees. And so does the research.

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