Hi Mummy Mel - I have only had one bub so far, the second is too small to compare yet, but I just wanted to say that my DS was VERY active in my uterus (I reiterate "VERY") and was born a VERY active boy and is now a VERY active 2 year old. You may be in for one too! But don't worry, it's a lot of fun and I wouldn't change him for the world!!