Humidity

As I get ready to go and run the Marine Corps Marathon next week, I trained this a.m. in very high humidity and did not feel exactly in top shape becasue the humidity has a big impact in performance. It makes me think about what humidities do we experience in life that also affect our performance in other areas. Is a bad boss the 'humidity' of work? Is a bad attitude the 'humidity' of life? What do you think?