It's never too early for Christmas, according to experts.

People who put up their Christmas decorations early may be happier than the rest of us — it's science.

"In a world full of stress and anxiety, people like to associate to things that make them happy, and Christmas decorations evoke those strong feelings of the childhood," psychoanalyst Steve McKeown told Unilad.

Amy Morin, author of "13 Things Mentally Strong People Don't Do," agreed that it's all about nostalgia. 

"For people who have lost a loved one, the holidays may serve as a reminder of happy times they had with that person in the past," Morin told Unilad. "Decorating early may help them feel more connected with that individual."

It even makes your dopamine spike, triggering those "feel-good" hormones, psychologist Deborah Serani told Today. That's because the bright lights, colors and simply the sight of a Christmas tree can trigger good moods, Today reports.

Unilad also reported evidence from a scientific journal citing Christmas decorations as making your house seem more "friendly and cohesive" to neighbors, spreading the holiday cheer to make you home appear more welcoming and accessible to your community.

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