I don't bother doing anything when I get sick. I keep doing what I do, ignore any symptoms I may have, and get on with life.
The only time that I couldn't do that was when I was hospitalized for three days because of my asthma trying to strangle me to death. My lungs weren't reacting to the inhaler, so after several hours of trying to get it to stop, my dad rushed me to the hospital, where I then promply threw up on the nurses desk when she said "You'll have to wait." I was only about 8 or so at the time. Nearly died there, or so I heard.
Anyway, I don't take medicine when I'm sick. I don't sleep when I'm sick. I play video games when I'm sick. I get better in four days or so. I only ever get sick once a year, and that was two months ago, so I'm good to go.