Yesterday I enjoyed a Professional ballgame and sat in the sun for about 2+ hours at 85+ degrees. Needless to say I was perspiring quite heavily. My iWatch 2 kept acting like having a hard shut down. It would go blank, apple logo would appear and then the pass lock feature would appear. It would work normal for a few minutes and then go through the whole cycle again and again. Out of frustration, I wiped my wrist and back of the watch with my handkerchief and it seemed the problem was solved. It is working normally today. Just wondered if this norma.?