DS has an amazing memory, but my lifestyle while pregnant was far from ideal. The first 6 months of pregnancy, I worked 100+ hours a week in a high stress job with a lot of international travel. I had very minimal exercise unless you count running through city streets to meetings or airports to catch flights... The last months of pregnancy, I occasionally did water aerobics in the pool with a bunch of senior citizens. I did eat better during pregnancy and while nursing than ever before.