Learning to exert conscious voluntary control over automatic body functions such as respiration, heartbeat, and skin temperature is called:

Learning to exert conscious voluntary control over automatic body functions such as respiration, heartbeat, and skin temperature is called gate control.
The gate control theory explains why thoughts and emotions influence pain perception. 
It suggests that the spinal cord contains a neurological 'gate' that controls pain signals to the brain.

Glucose, also called grape sugar, blood sugar or corn sugar, is among the simplest and one of the primary naturally occurring sugars. produced naturally by plants as the primary photosynthesis product, it is heavily used by living beings as a main energy source and is necessary for cellular respiration. chemically, it is a monosaccharide carbohydrate and serves as a building block for complex sugars like starch.