In January 2009 I was Stage 5 chronic kidney disease, in July 2009 I had a kidney transplant.
Looking back there were so many telltale signs that I had over the last six months, which I was ignoring as I was busy building my startup. A regular health check has the potential to catch a problem like this. I now nag each of my friends and family in having an annual health check.
Its the best time you can spend.
This was not the first time I made a mistake like this. When I was a kid, I had trouble seeing my teacher's blackboard. I just kept moving closer to the blackboard. I saw a doctor when I had trouble understanding what the teacher was writing from the first row.
Problems like this creep up on you over years, and they are so gradual you don't realize them.
You wont run your site without a Google Analytics/Pingdom. Dont do it with your life. If you haven't had a health check, get it done today.