3️⃣ The rule of 3
Reviewed on
A way to set priorities, not an exact figure: the order in which the lack of each thing kills you.
Open the guide in the app (works offline)Step by step
- 3 minutes without air (or with severe, uncontrolled bleeding).
- 3 hours without shelter in extreme cold, heat, wind or rain.
- 3 days without water.
- 3 weeks without food.
- That's why the order is: first aid → shelter and warmth → water → food. Food comes last, not first.
Safety
- These are approximations: with heat, exertion, children or sick people, the margins are much smaller.
Source: Practical survival rule used in rescue and mountain training