I notice that when I wear headwear (such as a cap or a beanie or over a t-shirt over my head - I get a great boost in temps/metabolism and serotonin is lowered tremendously - I suspect because a raise in temps in the brain (head insulation) helps boost metabolism
I notice that people with very thick, curly hair that I have known throughout my life tend to also have lower serotonin - more relaxed attitudes and everyone I knew throughout my life that was more aggressive, less chill, had issues with anxiety had straight, thinner hair when compared to the people I know with curls - with no exception to the rule.
I think being born with thicker hair/curls is 24/7 head insulation that isn't as strong in people with straight hair and subsequently better metabolisms - I have always found women with curls/thicker hair very attractive and wasn't sure of the evolutionary reason until now...
I notice that people with very thick, curly hair that I have known throughout my life tend to also have lower serotonin - more relaxed attitudes and everyone I knew throughout my life that was more aggressive, less chill, had issues with anxiety had straight, thinner hair when compared to the people I know with curls - with no exception to the rule.
I think being born with thicker hair/curls is 24/7 head insulation that isn't as strong in people with straight hair and subsequently better metabolisms - I have always found women with curls/thicker hair very attractive and wasn't sure of the evolutionary reason until now...