How can I preserve my computer chair?

Question:I used to have a computer chair (wal-mart brand) that I used for so long that the cushioning started migrating away from my butt and legs to where it felt like I was sitting on a piece of wood.

I bought a new one and I tried every single chair the store had (Office Depot) and this one feels awesome. It was one of their most expensive ones so I want to make sure it lasts and the cushion doesn't migrate away from my butt again.

Answers:
If the chair was one of their most expensive ones, then hopefully the chair will hold up just fine, "butt again" I could be wrong. Make sure your weight is evenly distrubuted in the chair & don't sit on the edge of it.