this researcher looks at oxytocin.ocin which helps people cooperate. >> we wondered about the role of trust. we wanted to get a biological basis for why we trust strangers. >> and it's because of a chemical in our body? >> it functions to cause us to reciprocate almost always. it's the biological basis for the golden rule. >> by hugging people people release more of this hormone? >> oxytocin. >> which makes people happier. >> improves the immune system and promotes cooperation without anyone else thes us we have to. >> my producer got full frontal hugs by dozens of strangers. some people ran to her. >> she's running. >> she's running. we're doing this. >> so i'm in the my hug experiment and i'm probably about 40 hugs in. i've hugged men. i've hugged women. i've hugged children. the men i've hugged they hugged me a little too tightly. my dad's watching. he's not going to appreciate this. oh, this guy's coming in. he's going in. he's going in for the kill. he's going in. oh. >> i feel better. >> i feel fantastic. maybe d

healthier -- oxytocin. promote cooperation without anybody telling us we have to.ngers. i was surprised very few turned her r down. some people ran to her. >> she is running. >> she is running. she is running. we're doing this.m >> so i'm in the middle of my hug experiment and i'm problem 40 hugs in. i have hugged men. i have hugged women. i hugged children. the men i have hugged, they hugged me a little too tightly. my dad is watching. he will not appreciate this. oh, this guy is coming in. going in for the kill. >> oh. >> i feel better. >> i feel fantastic. maybe dr. love is on to something. ♪ john: data show that this makes people happy the hug.le to do it scientifically, oxytocin how? >> we infuse it into the nose and gets into the brain about an hour. we show this causal relationship between oxytocin and positive behaviors like trust sinceritity, generosity, and others.o you want to try? john: sure. this is why you're wearing white coat. osha require this. >> i'm required to wear a white coat. a couple of little puffs. a big breath. one, two, three four, five.