While food is important, you can live without it for weeks, but water is a non-negotiable. Without water, you can’t live longer than a few days.
One of the most important things you can learn is how to extract water from the environment in the wild. One of the issues people often face is that they can’t find a safe and clean source of water in the wilderness.
Thankfully, plants and trees are great sources of water if you know how to work with them. The water extracted from plants is usually clean and safe to drink.