Freebase(0.00 / 0 votes)Rate this definition: Commonly used in medicine, the word decubitus is used to mean lying down. It is derived from the Latin verb âdecumbereâ meaning to lie down.
The brain regulates metabolism and manages other functions to keep your body temperature within a normal range. But the brain can only do so much, and a host of outside factors can affect your body temperature. Controlling and managing these outside factors is key to maintaining a normal body temperature.
This is called cellular   respiration and it is the main way your body stays warm. Your body under normal conditions regulates the amount of heat produced to keep a stable body temperature of 37 degrees Celsius or 98 degrees Fahrenheit.