It's all about balancing chat hype with stomach capacity. You want to build hype as quickly as you can at the start. Save your weigh-in for when you really need it. Don't be shy about belly rubs to ease your stomach fullness, as refusing a viewer delivery really kills the vibe.
The next update adds a lot of new stuff to this, though, changing how best to play & making turning yourself into an overstuffed mess more rewarding.