How do you stay healthy?
snewe: Start going to gym or running or "insert activity here" regularly.  One of these things has to be something you like or will like when you get good at it.  Personally, I find the gym boring and...vain.It will suck at first, but eventually you will reach a point where you feel guilty not going to the gym or running or "insert activity here".  This has worked well for me in San Diego (running my second half-Ironman in a week).