Tears
Tears aren't excretory or cathartic? Maybe this guy hasn't been through the right kind of situation.<p>When one of my kids was going through a health crisis I did a heck of a lot of lone crying. Each time internal stress and anxiety would build, my guts would get all churned up, then it would reach the point where I would cry and the "symptoms" would all reduce dramatically before starting to build up again.<p>I was amazed at the time that crying had such a noticeable effect on physical symptoms. I thought I must be dumping something, adrenalin?, out my tear ducts.<p>I'm probably wrong, though it's not the kind of set up you can test in a lab.