There are many ways people choose to prepare for a disaster like earthquakes, hurricanes, pandemics, terrorist attacks etc. Some store food. Some get survival kits. Some people build their own bug-out bag. And some people even designate a place outside of the city they can go to should things get ugly.
A survival knife is very handy in outdoor situations, either for survival or safety purposes. Each type of survival knives has distinctive specialized characteristics. A survival knife normally has a smooth blade. It can be used to prepare foods and cut tree limbs. It can also have a hooked blade for slicing ropes and opening cans.
Physically train to satisfy the survival of the fittest instinct... and develop a body that performs as good as it looks.Most people, at some point in there lives, decide that their bodies, and their capabilities to perform tasks with those bodies, are lacking... and they seek to rectify this through physical training.