Reckless me?

Today is my colleague's weekly soccer. I am sick today. Cough and sneezing. My manager was telling me that I shouldn't go for the soccer session. It's dangerous. May die. But I thought otherwise. In the past, when I am down with cough, sneeze or slight fever, and I go exercise, I feel better during the exercise. I thought the adrenalin did me some good. Of course, I don't want to die. I would have stop immediately if I feel not up to it. And I am no doctor either. So my theory could be and is probably wrong. Nevertheless, I went for the session and is now tired out. And my muscles are aching.