High and Mighty

I got this new tattoo about a month ago not realizing that it would be such a conversation starter.  It has a ton of meaning to me but the majority of people looking at it cannot even begin to figure out what it is and a lot of them ask.

I have been saying "it is an endogenous opioid peptide responsible for runner's high" because . . . it IS an endogenous opioid peptide responsible for runner's high.  What I did not realize until yesterday is that is about as clear to people as the tattoo.

Three people in the airport yesterday that asked about it seemed completely taken aback.  They basically thought I told them that I do heroin recreationally.

I am trying to rework my explanation.

How about this?

I am a long distance runner and a scientist.  This is the chemical that makes you feel euphoric when you run long distances.