5. Remember the "rules of 3."
The rules of 3 are rules that show the average survival of a person under certain conditions.
- 3 minutes without air, on average, until a person loses consciousness;
- 3 days without water, after which comes life-threatening dehydration;
- 3 weeks without food without serious damage to health. In a critical situation, the body is rebuilt and sometimes can do without food for a month.