After much practice, the process became almost automatic, the mobility and balance a given. You probably went through the same process in learning to swim or to drive. A newborn baby sucking milk without thought is no different. All the above reactions result from the use of the bodies' software. When you bite your tongue, or when the food goes down the wrong tube when eating, that is the result of an error in our bodies software.
Modern medicine is based on a surgical and pharmaceutical approach to healing.
These approaches attempt to fix the hardware in our bodies. Conversely, Alternative Medicine typically focuses on the software. If a person hit their calve against a rock we can assume the person will feel pain. I don't think so. For most, they feel less pain when they do one or the other.