I am very into my training. I have always been interested in in how a pro athelete like Coach Sonnon etc, deals with being sick/training schedules. For myself, I will always lay off when I feel it coming on, so my strength can be devoed to overcoming the cold. I have heard the "sweat it out" theory, but that has only led me to getting sicker. that was years ago when i tried it and I never got as sick as I did after I got over heated, dehydrated etc during when I had a cold.