It's true. I used to be terrified of having a baby or getting pregnant because my mom gained about 80 lbs when she had my older sister and never was able to lose it, and thus spent my entire childhood telling me that that would happen to me and that my dad left her because she got fat (ignoring the fact that she's a pathological liar, there was some truth to that). It wasn't until I started on the healthcare track that I learned that one should only gain about 3  3fb4  0 lbs and only needs about 300 kcal extra. Then it all made sense why so many people have kids without transforming into hams. No longer scared.