The answer is Production of organism, it happens in all warm-blooded animals, and also in a few species of thermogenic plants for example the Eastern skunk cabbage, the Voodoo lily, and the giant water lilies of the genus Victoria, the lodgepole pine dwarf mistletoe. To keep the temperature up through shivering has only one method, it produce heat because of the conversion of the chemical energy of ATP into kinetic energy causing almost all of the energy to show up as heat.
