So I took the Polygraph at a department I'm applying for today. I got a weird remark by the examiner, asking me if I'm a Marathon runner..??? I'm in the Military and do a lot of running I explained. I don't know yet the results, but I was pretty nervous I'll admit I tried to control my breathing best I could and didn't make any sudden movements.
The polygrapher may have found your heart- and/or breathing rate to be unusually slow. It's a good sign if you were not directly accused of deception or willfully attempting to manipulate the outcome.