Why Do We Fold Our Hands When We're Alone?

Ever caught yourself folding your hands while waiting somewhere? Not because you were cold or tired, but just... standing there, hands clasped, lost in thought? I did.
Last day, I was waiting for the bus, standing alone at the station. At some point, I realized—my hands were folded. And for a second, I paused. Why? Was I feeling lonely? Insecure? I had read somewhere that sometimes we fold our hands when we feel unsafe or alone. But here I was, perfectly fine, just standing. So why did I do it?
Maybe it was the scene around me—groups of people laughing, friends chatting, a gang of strangers who felt familiar to each other but completely unknown to me. It made me conscious of myself. Maybe even made me miss myself—the version of me that exists in a crowd, laughing, talking, belonging.
So, what is it about folding hands?
A Silent Self-Hug? Maybe it's comfort—like wrapping yourself in an invisible hug. A small way to hold yourself together when the world around feels too big, too distant.
A Shield? Maybe it's protection, a subconscious barrier between me and them. A quiet way of saying, I’m here, but not fully open to this space yet.
A Habit? Or maybe it’s just that—a habit. A neutral resting position when you don’t know what else to do with your hands.
But then, why does it often happen when we’re alone? I think our body speaks before our mind catches up. Maybe folding hands is just another way of grounding ourselves in moments when we feel slightly out of place. Maybe it’s a reflex—one we don’t question until we do. And maybe, just maybe, it’s our body’s way of whispering, Hey, I got you. —
What do you think? Do you ever find yourself doing the same?