Why do I seldom defecate every time I travel?

Ha ha ha, just like me. This problem has been bothering me for a long time. Why do you defecate outside once every three days? Why do I have to shit as soon as I get home from the plane? Why don't you have diarrhea when you are away on business?

I guess it's because of mental stress in the brain, or because there is no sense of security at home in the field, so the human body has an instinctive stress reaction.

I noticed that if I go on a business trip alone, the business trip task can be easily completed, especially if I can arrange my own workflow, and my stool will be more normal. If you travel with leaders or colleagues, it's over. It happens that you haven't defecated for four days.

So I think stress is the main factor.

By the way. I usually defecate once every morning.