: Use the reflective surface of a CD, a polished soda can bottom (buffed with chocolate or toothpaste), or a mirror to signal for help or concentrate sunlight to start a fire. II. Water and Hydration
: Smearing petroleum jelly onto cotton balls creates a "fire starter" that burns for several minutes, providing enough time to ignite even stubborn, slightly damp wood. 19 MUST-KNOW SURVIVAL HACKS
Maintaining core body temperature is the highest priority in extreme cold or heat.10. : If you have access to packing materials, bubble wrap is an incredible insulator. Wrapping it around your torso beneath your clothes traps air pockets, providing significant warmth.11. Pine Needle Bedding : Never sleep directly on the ground; the earth will sap your body heat (conduction). Build a "mattress" at least six inches thick using dry pine needles, leaves, or grass.12. The Space Blanket Reflector : Rather than just wrapping yourself in a Mylar space blanket, use it to line the back of your shelter. It will reflect the heat of your fire back toward you. IV. Tools and Navigation : Use the reflective surface of a CD,