Better Not To Know?

At the dog park, a retired Rutgers food science teacher told me that he didn't swim in the ocean much this summer because the bacteria levels were so high-- but luckily (or unluckily?) I did not know this, and so I swam in the ocean twice a day for most of August . . . and yesterday at the doctor's office, when I was preparing to get my second gel shot in my knee, the nurse took my blood pressure, and I asked her if it was lower than last week and she said, "Yes, it IS lower this time," and I told her I had the day off from school (for Yom Kippur) and last week I had rushed over after being in a room full of teenagers all day . . . so now I have proof that this stupid job is bad for me (which makes me NOT want to show up).