Breath: Divine Gas In a Smart Body

The word breath most often refers to the air we pull in to and pump out of our lungs (or to the action of doing so) as in “Take a deep breath.” But we also give the same word loftier qualities in phrases such as “the breath of life” and in practices like yoga that view the breath as a source of health and peace. Other traditions and languages also have words for breath in both these ordinary and spiritual senses, such as Latin spiritus, Hebrew ruach, and Chinese qi.

breath spirit (soundofheart.org)

soundofheart.org

But what about the breathing body itself? Unless we are wheezing or short of breath, we usually take the smooth coordination of our lungs, diaphragm, membranes, and blood cells as unremarkable. But let’s refocus our wonderment for a moment. The air is, when you come down to it, just a mix of gasses, but our body’s ingenious respiration of them is a process to appreciate.

We breathe in air because it contains one gas that we must have: oxygen. We know that. Less familiar, though, is the step-down system that has evolved to make the most of the fact that, like all gasses, oxygen spreads out from wherever there is more of it to where there is less of it. Thanks to this step-down dispersal and our flowing  blood, we move oxygen from the air outside of us to every cell that is waiting for it, all several trillion—that’s 000,000,000,000—of them.

Why oxygen? Its electrons are arranged in such a way that it interacts eagerly and often with other elements. It’s a potent extrovert. The body’s cells may get their nourishment from food molecules but not unless they also have oxygen handy to break those molecules down. That would be like our eating dinner without any acid in our stomach to digest it. No nourishment. Without oxygen, cells go hungry.

But a little oxygen goes a long way. The numbers surprised me. Only about twenty percent of the air that we breathe is oxygen. The rest is nitrogen and a percent or two of other gasses. And of that twenty percent of oxygen that we inhale, we actually use only about a quarter of it. The rest goes out again. Our inhalation is twenty percent oxygen; we exhale fifteen percent.

Once it is in our lungs, oxygen must get across the lung’s membrane to the blood stream that will move it around the body. The amount of oxygen in the lung might not seem like much, but it is more than remains in the oxygen-depleted blood that is returning towards the lungs through the veins. So the new oxygen steps down across the thin membrane to the empty hemoglobin molecules in the blood cells for the ride to the rest of the body.

As this convoy of oxygenated blood flows near, say, a finger, the oxygen detaches from the hemoglobin, steps down once more across a membrane to a cell itself, and goes to work on the food particles. In the process, extrovert that it is, oxygen combines to form unusable carbon dioxide, crosses the cell membrane back out to some empty passing hemoglobin that just dropped off new oxygen elsewhere, rides the vein back to the lungs, gets off again, and is exhaled back out to air. Like riding the bus you took to work back home at the end of the day.

I argue for the wonderment of a distribution system that pulls in air-borne oxygen in an endless rhythm, arranges for it to disperse itself across strategic membranes, loads it on to the blood for transport to a million million cells that it will help nourish, after which it returns the way it came in. Our stunning respiration makes oxygen look good—even divine.

 

Black Body and Soul

In his book Between the World and Me, Ta-Nehisi Coates often refers to himself and other black people as bodies. The central fear of blacks in America, he writes, is and has been that their bodies will be destroyed. The fear pervades the bravado of black youth as well as the steely hope of the elders. Instead of using an I or we or you, Coates writes such sentences as “Sell cigarettes without the proper authority and your body can be destroyed. Resent the people trying to entrap your body and it can be destroyed” and “In America, it is traditional to destroy the black body—it is heritage” (103).

In the middle of the book, this theme of the body takes a turn.

I believed, and still do, that our bodies are our selves, that my soul is the voltage conducted through neurons and nerves, and that my spirit is my flesh. (79)

I have no praise anthems [in memory of the deaths of slaves], nor old Negro spirituals. The spirit and soul are the body and brain, which are destructible—that is precisely why they are so precious. And the soul did not escape. The spirit did not steal away on gospel wings. The soul was the body that fed the tobacco, and the spirit was the blood that watered the cotton. (103)

For Coates, soul and spirit exist as mortal, not immortal, attributes, present in us when we live and gone when we die.

(africanamerica.org)

(africanamerica.org)

Coates surprised me when he argued for the thoroughly bodily nature of spirit and soul. I have had the luxury of holding secular views of life without feeling the threat of bodily destruction hanging over me and those close to me. But Coates has the courage to put aside the consolations of the immaterial and the supernatural despite believing that the bodies he cares about are never safe from violence. I’ve never been put to that test.

Coates is not fully comfortable with his secularism, however. He writes to his son, to whom the book is addressed, that he, Coates, worries about having “missed something” by rejecting religion.

I thought of my own distance from an institution that has so often been the only support for our people. I often wonder if in that distance I’ve missed something, some notions of cosmic hope, some wisdom beyond my mean physical perception of the world, something beyond the body, that I might have transmitted to you. (139)

But Coates does find a kind of transcendant hope and wisdom in a different collaborative setting besides the church. He writes to his son that his life has essentially been happy, “that I drew great joy from the study, from the struggle toward which I now urge you” (115). Perhaps the shared purpose and collective energy of his political activism is a portion of what he fears he missed in rejecting religion. If so, I think his son has the message.

Chet Raymo on Santa Claus, Hot Stoves, and the Blooming, Buzzing Confusion

We cannot live without some sorts of make-believe in our lives. Without made-up maps of the world, life is a buzzing, blooming confusion. Some elements of our mental maps (Santa Claus) satisfy emotional or aesthetic inner needs; other elements of our mental maps (a hot stove) satisfy intellectual curiosity about the world out there. We get in trouble when the two kinds of maps are confused, when we objectify elements of make-believe solely on the basis of inner need.

The passage is from Chet Raymo’s book Skeptics and True Believers: The Exhilarating Connection between Science and Religion (1998). Raymo is Professor Emeritus of Physics, raised as a Catholic, with a religious sensibility alongside a firm skepticism. He recently stopped posting on his blog, Science Musings, but the inspiring archives remain open.

We all carry around mental maps of the world—images and words that guide us—that should not be confused with the real world itself. Raymo writes about the two kinds of entries on our maps. Some entries reflect our neediness, since we were children, for emotional comfort, simple explanations, and a sense of our own importance. Santa Claus is on the map for many children. When we’re adults, other superstitions, miracles and astrology often take Santa’s place. Such beliefs help many of us make sense of the world. They also help us feel we have a place in it, for there is nothing worse than thinking that we are only insignificant specks.

As Raymo puts it, these are beliefs about what we yearn for. In contrast, we also put on our maps more objectively realistic items that we learn about. These include the facts that stoves can burn us and that dinosaurs and humans did not walk the earth at the same time.

Artificial island in the Maldives, in the Indian Ocean (pinterest)

An artificial island in the Maldives, in the Indian Ocean
(pinterest)

But—and here’s what makes the book so valuable—Raymo is not saying simply that we should value the learn items and let go of the yearn ones. For a person who values only objective knowledge runs the risk of becoming cold and arrogant. We need a mix of worthwhile knowledge along with an appreciation of what we don’t know and yearn to understand.

Raymo’s central metaphor for all this is that our map resembles an island in a sea of mystery. The island is our knowledge and the sea is the actual, mysterious, and infinite universe around us. On our island, “We dredge up soil from the bed of mystery and build ourselves room to grow. And still the mystery surrounds us. It laps at our shores. It permeates the land.” When such thinkers as Galileo and Einstein illuminate some of the mystery, that mystery sweeps in on a tidal wave and overwhelms much of what we thought we had known for sure. So we rebuild.

As we expand the island and extend its shores, the border between the land and the sea, instead of shrinking, grows longer. That is, the more we know about the objective world, the more that the mysteries of existence beckon the scientists, artists, and other creative people who are open to them. Raymo’s book appeared in 1998, but his metaphor of this extended shoreline fits well with recent discoveries of the many planets circling other stars and with the neuro-imaging of the brain. Both advances in knowledge have, instead of dulling our sense of mystery, excited and extended it.

Where on the island, Raymo asks, do we find the best and most creative work being done? At the shoreline. “We are at our human best as creatures of the shore, with one foot on the hard ground of fact and one foot in the mystery of the sea.”

The stance describes Raymo himself. And it reminds me that to relish both our knowledge of living things along with our sense of the mystery of being alive is a good place to be.