Why Am I Always Sick at my Favorite Time of Year?

Wow, it's that busy time of year. Tonight I went to the Winter Concert at my oldest son's elementary school. It was fun to see him sing with the other Kindergarteners, but the room was miserably crowded. Yikes. I also ended up sitting in the back corner next to a door that kept opening and letting in the chill air. I don't know if that's the cause, but my throat is more sore tonight and I'm coughing again. I've been feeling a bit under the weather again the last few days, but just cold symptoms, no fever or anything.

In spite of feeling a bit sick and very sleepy from last night's cold medicine, I went ahead and had a great workout today. I did the Kickbox & Legs workout from Cathe Friedrich's 4-Day Split. I had to take a couple breaks during the cardio because of feeling a bit dopey, but overall it felt like a successful workout. Yesterday I ended up resting because of feeling ill, but I just really wanted to go ahead and do something today.

Here's my workout rotation for this week:

MON.........Upper Body Weights & Cardio Circuit....4DS Higher Intensity Circuit premix (Cathe Friedrich)
TUES........Rest
WED.........Lower Body & Short Cardio....................4DS Kickbox (Cathe Friedrich)
THURS.....Yoga/Pilates..........................................Bosu Long & Lean (Chalene Johnson)
FRI............Yoga + Circuit........................................Yoga class + Cardio/Sculpt Fitness (Kelly Coffey-Meyer)
SAT...........Cardio...................................................Jog (weather permitting) or step aerobics
SUN..........Rest