Myth 2: Cactus plants are a good source of water.
Cactus plants or succulents may have high water content, but they also contain natural chemicals that can induce nausea, vomiting and diarrhea. These are not side effects you want to experience during an emergency when sanitary restroom conditions are not easily available. It is more prudent to collect water from rock crevasses because a little dirt will not make you sick.