Add a new rule, “Feast and Famine”:-

At any time during a Saturday or a Sunday, any Caveman may call a Feast, unless a Caveman has already called a Feast in the past 72 hours. Upon doing so, if the Chief is carrying a piece of Raw Meat, then that Meat is removed from the Chief’s Tools and the tribe is fed. If the Chief has no Raw Meat, then the tribe must fend for themselves, or go hungry - each Caveman who is carrying Raw Meat loses one piece of Raw Meat, and each Caveman who is not carrying Raw Meat loses two Intelligence.