In recent years ginseng became really popular, expecially in coffee, and since it have a lot of good properties it's not a bad thing. Gingeng plants stimulate the central nervous system when affected by physical fatigue, weakness due to illness or injury and/or prolonged emotional stress. It also help with anxiety and insomnia, and a lot of athletes use this plant to mantain their stamina and energy. And, if this is not enough, it seems it could prevent tumors. Since both stress and fatigue are common in a survival situation, I think ginseng it's a pretty useful plant to know!