I have been thinking about a hypothesis that may sound unusual, but I wonder if there is existing research around it.

The hypothesis is that some forms of customer aggression, excessive complaints, “Karen”-like behavior, or entitlement in service environments may not be caused only by personality, ideology, class, or social norms. Part of it may come from chronic bodily discomfort that people fail to recognize as bodily discomfort.

For example:

weak feet or poor foot posture low walking history flat feet or poor arch support weak calves, hips, or core long-term sedentary work obesity or heavy upper-body load menopause, aging, sleep problems, chronic pain poor tolerance for standing, walking, waiting, crowds, heat, or noise

My rough model is:

bodily support weakness → higher physical discomfort while standing, walking, or waiting → increased sensitivity to minor environmental stressors → poor interpretation of the discomfort → externalization: “the staff is bad,” “the service is bad,” “people are not considerate enough” → excessive complaints, demands, or institutional escalation

In other words, the person may believe they are reacting to poor service, unfair treatment, or social decline, while the underlying trigger is partly that their body is already under stress.

This also made me think about modern desk-work society. Many people now earn status and income through memory, rule-following, abstract reasoning, administration, compliance, and screen work, while their bodies become worse at standing, walking, carrying, and adapting physically. Modern society may have created people who are weak against gravity but strong at using institutions, complaint systems, HR departments, legal language, reviews, and social media.

A short version of the idea would be:

Modern society may have produced people who are physically weak against the ground, but institutionally strong against other people.

This could also explain why certain complaints appear more often among middle-aged or older people, affluent people, high-service consumers, or families dealing with expensive elder-care facilities. In those settings, bodily decline, high self-image, service expectations, and institutional leverage all collide.

I am not claiming that “flat feet cause bad behavior” or anything that simple. I am asking whether there is research connecting:

foot strength, posture, walking history, chronic pain, or sedentary lifestyle stress tolerance, irritability, anger, or aggression customer complaints, entitlement, service expectations, or institutional escalation aging, menopause, or elder-care environments desk work and loss of physical resilience

Has anyone seen serious work in anthropology, psychology, ergonomics, pain research, behavioral economics, or sociology that touches this?

I would especially be interested in research on how bodily discomfort gets translated into moral, social, or institutional complaints.