Rule of Threes

The Rule of Threes: survive 3 min without air, 3 hrs without shelter, 3 days without water, 3 weeks without food. How to use it for survival prioritization.

More from Protocol: Survival

• Preparedness Blog — Guides, gear reviews, and scenario prep.
• Survival Guides — In-depth emergency preparedness guides.
• Preparedness Tools — Free survival calculators and planners.
• Survival Scenarios — Prepare for outages, disasters, and more.
• Courses — Structured preparedness learning.
• Survival Glossary — Key preparedness terminology.