A gainer pushes her body to the limits.
I hate how the media portrays this fetish. Only a very small amount of gainers are that size; most are in the 200-400 lb range. They're purposely displaying a side of feedism that is grotesque even to some people within the fetish for shock value and it's sickening. Most gainers/feeders fantasize about being immobile, but that's all it is: a fantasy. Feedism is about love and acceptance. It's about enjoying a body type that isn't necessarily conventionally attractive. This video is a poor example of the feedism community.