Step One: Put on your backpack and walk to the grocery store.
Step Two: Walk right past the grocery store and continue to the next one.
Step Three: Repeat Step Two until you are at a grocery store at least 10 miles from your home.
Step Four: Buy 30 pounds of food and place it in your backpack.
Step Five: Walk home along the hilliest route possible.
Step Six: Cook the food and place it in a dehydrator.
Step Seven: Sleep.
Step Eight: Return to Step One.