Hey look at this lol (I Googled "Calming to stare at fire");

"When it’s cold outside, there’s nothing quite like sitting by a cozy fire. But why do we find this experience so comforting? According to the author of this study, this relaxation response to fire is actually an evolutionary adaptation. The author argues that early humans who were more prone to relaxation at a campfire would be more likely to “benefit in the social milieu via fireside interactions”, thereby giving them a survival advantage. He then goes on to experimentally demonstrate that sitting by a fire (well, in this case a video of a fire), especially if you can hear that distinctive crackling sound, causes a reduction in subjects’ blood pressure. Although this study doesn’t prove that the fire response is an evolved adaptation (it could also be cultural conditioning, for example), it does show that sitting by the fire really can help you relax. A glass of mulled wine probably wouldn’t hurt either!"