Some kind of lung infection. My lungs always seem to get hit hard when I catch a cold. In the past I always just kind of brushed them off as par for the course for the flu season. But last year I got a resparitory infection a week before Christmas ago(caught a cold from work). I coughed my throat raw and had aches and chills for two days. I had very little energy and there were times where my congnition felt diminished. Over the counter stuff didn't help much. I got antibiotics on the third day...after I started to develope bronchitis. It was hard for me to hold them down. By day three of antibiotics my cough was getting better but didn't go away. I was still waking up in sweat, had no appetite, and felt low on energy. For the first time in my life I had this sudden realization that antibiotics are not a guarantee and I could legitimately die from complications of this infection. It hasn't even been a week! Luckily things started to improve by end of the 4th day on the regiment and I recovered. However, I now wonder how my lungs will fare out the flu season in 10-20 years.