craigb
Did you test while you're playing? Maybe it's higher during that time...
Nope - I wanted to do the first test in the morning when I wake up but I decided to try and see what it looked like after a regular day, and today was pretty typical - I even felt like the pH level could be lower because I had a few extra coffees and had to deal with a couple things which made me feel a bit tensed.
That being said, I'd been playing guitar all evening, up until approximately 30 minutes before I tried the test.
I'll have to test myself a bunch more times, but maybe salt is the issue.