​For Calling the Spirit Back from Wandering the Earth in Its Human Feet: Joy Harjo - 1951-

 Put down that bag of potato chips, that white bread, that bottle of pop.
Turn off that cellphone, computer, and remote control.
Open the door, then close it behind you.
Take a breath offered by friendly winds. They travel the earth gathering essences of plants to clean.
Give it back with gratitude.
If you sing it will give your spirit lift to fly to the stars’ ears and back.
Acknowledge this earth who has cared for you since you were a dream planting itself precisely within your parents’ desire.
Let your moccasin feet take you to the encampment of the guardians who have known you before time, who will be there after time. They sit before the fire that has been there without time.
Let the earth stabilize your postcolonial insecure jitters.
Be respectful of the small insects, birds and animal people who accompany you. Ask their forgiveness for the harm we humans have brought down upon them.
Don’t worry. The heart knows the way though there may be high-rises, interstates, checkpoints, armed soldiers, massacres, wars, and those who will despise you because they despise themselves.
The journey might take you a few hours, a day, a year, a few years, a hundred, a thousand or even more.
Watch your mind. Without training it might run away and leave your heart for the immense human feast set by the thieves of time.
Do not hold regrets.
When you find your way to the circle, to the fire kept burning by the keepers of your soul, you will be welcomed.
You must clean yourself with cedar, sage, or other healing plant.
Cut the ties you have to failure and shame.
Let go the pain you are holding in your mind, your shoulders, your heart, all the way to your feet. Let go the pain of your ancestors to make way for those who are heading in our direction.
Ask for forgiveness.
Call upon the help of those who love you. These helpers take many forms: animal, element, bird, angel, saint, stone, or ancestor.
Call your spirit back. It may be caught in corners and creases of shame, judgment, and human abuse.
You must call in a way that your spirit will want to return.
Speak to it as you would to a beloved child.
Welcome your spirit back from its wandering. It may return in pieces, in tatters. Gather them together. They will be happy to be found after being lost for so long.
Your spirit will need to sleep awhile after it is bathed and given clean clothes.
Now you can have a party. Invite everyone you know who loves and supports you. Keep room for those who have no place else to go.
Make a giveaway, and remember, keep the speeches short.
Then, you must do this: help the next person find their way through the dark. 

Posted at 09:00 in Shamanism by Dr. Alberto Villoldo
One of the most important features distinguishing humans from all other mammals is the size of our brain in proportion to the rest of our body. While it is certainly true that other mammals have larger brains, scientists recognize that larger animals must have larger brains simply to control their larger bodies. An elephant, for example, has a brain that weighs 7,500 grams, far larger than our 1,400-gram brain. So making comparisons about “brain power” or intelligence based on brain size is obviously futile.
Again, it’s the ratio of the brain size to total body size that attracts scientists’ interest when considering the brain’s functional capacity. An elephant’s brain represents 1/550 of its body weight, while the human brain weighs 1/40 of the total body weight. Our brain represents about 2.5 percent of our total body weight as opposed to the large-brained elephant whose brain is just 0.18 percent of its total body weight.
But even more important than the fact that we are blessed with a lot of brain matter is the intriguing fact that, gram-for-gram, the human brain consumes a disproportionately huge amount of energy. While only representing 2.5 percent of our total body weight, the human brain consumes an incredible 22 percent of our body’s energy expenditure when at rest. This represents about 350 percent more energy consumption in relation to body weight compared with other anthropoids like gorillas, orangutans, and chimpanzees.
It takes a lot of dietary calories to keep the human brain functioning. Fortunately, the very fact that we’ve developed such a large and powerful brain has provided us with the skills and intelligence to maintain adequate sustenance during times of scarcity and to make provisions for needed food supplies in the future. Indeed, the ability to conceive of and plan for the future is highly dependent upon the evolution not only of brain size but other unique aspects of the human brain.
It is a colorful image to conceptualize early Homo sapiens migrating across an arid plain and competing for survival among animals with smaller brains yet bigger claws and greater speed. But our earliest ancestors had one other powerful advantage compared to even our closest primate relatives. The human brain developed a unique biochemical pathway that proves hugely advantageous during times of food scarcity. Unlike other mammals, our brain is able to utilize an alternative source of calories during times of starvation.
Typically, we supply our brain with glucose (blood sugar) from our daily food consumption. We continue to supply our brains with a steady stream of glucose between meals by breaking down glycogen, a storage form of glucose primarily found in the liver and muscles.
But relying on glycogen provides only short-term availability of glucose. As glycogen stores are depleted, our metabolism shifts and we are able to create new molecules of glucose, a process aptly termed gluconeogenesis. This process involves the construction of new glucose molecules from amino acids harvested from the breakdown of protein primarily found in muscle. While gluconeogenesis adds needed glucose to the system, it does so at the cost of muscle breakdown, something less than favorable for a starving hunter-gatherer.
But human physiology offers one more pathway to provide vital fuel to the demanding brain during times of scarcity. When food remains unavailable for more than 72 hours, the liver begins to use body fat to create chemicals called ketones. One ketone in particular, beta hydroxybutyrate (beta-HBA), serves as a highly efficient fuel source for the brain, allowing humans to function cognitively for extended periods during food scarcity.
Our unique ability to power our brains using this alternative fuel source helps reduce our dependence on gluconeogenesis and therefore spares amino acids and the muscles they build and maintain. Reducing muscle breakdown provides obvious advantages for hungry Homo sapiens in search of food. It is this unique ability to utilize beta-HBA as a brain fuel that sets us apart from our nearest animal relatives and has allowed humans to remain cognitively engaged and, therefore, more likely to survive the famines ever-present in our history.