Pretty clever, the way the human body was designed. It heals itself when cut or broken. The threshold of human hearing is just below what it would take to hear our heart beating, our food digesting. Nor can we hear the high pitched squeals of insects as we step on them, nor the groans of plants when we pick them. The architect of the human body was a pretty smart fellow, or gal if you call her Mother Nature.
But what we do to test those limits is incredible.
Nature never intended us to drink liquids that are ICE cold. And if we do drink them too quickly, we suddenly get "brain freeze". Not the brain cooling itself, I imagine, but the nerves in the esophagus and tummy shrinking in protest and sending howling pain to the brain...and does it hurt.
And nature never intended us to drink beverages heated in a microwave either. It is easy to scald oneself. I have blistered the roof of my mouth more than once on Pizza right out of a 500 degree oven.
Nature has taught us that "sweet" is good. That was so we would enjoy fruits that grew on trees. But we learned to refine sugar and sweeten anything. Oh, what we do to our systems, and teeth, with candy. We eat the sweet, not the source of the sweet.
We learned to distill grain and make alcohol. Wow, says the liver...here I am removing toxins from the food and drink, and here comes pure poison. Well, I must do my best.
Nature gave us natural circadian rhythms for sleep and wakefulness. But we have learned to travel faster than the sun and lengthen and shorten our days with jet travel. I have never had "jet lag" but many of us have.
Our bodies are wonders. They cope with unnatural environments they were never designed for.
Thank you, Mother Nature, for this body. It's the only one I have.