Hygiene & Soap idea: Low personal hygiene would increase susceptibility to disease, decrease healing rate, and lower nutritional value of food when cooked or eaten. Bathing or washing with water would increase hygiene and using soap would increase the effectiveness. Hygiene would decrease when performing certain tasks such as digging or mining for instance. Soap would be made by boiling lye with animal fat. The natural substance skill or a soap making skill would be used for this.