If you mean by energy as the spirit or the soul, then the answer is yes. A person may die and the spirit or soul will leave the body. If for some reason God feels that it was not you time to die the spirit may be returned to the body so that the person may complete their earth life.
The energy for your body usually comes from the foods that you eat. The calories in the food are broken down to carbohydrates to create energy so your body can use them.
The food you eat.
it depends on whether your starving or not. if not, it comes from food (measured in calories). otherwise, your body's' energy will come from stored fat, stored glucose (often in the liver) and lean body tissue (muscle).
Friction
ATP
it depends on whether your starving or not. if not, it comes from food (measured in calories). otherwise, your body's' energy will come from stored fat, stored glucose (often in the liver) and lean body tissue (muscle).
Mechanical energy, which may originally come from just about any other type of energy. For example, if you push with your muscles, you are converting chemical energy in your body into mechanical energy.
Compared to carbohydrates and protein, fat provides more energy. But it is not always preferentially used by the body. Your body also needs fat to survive because of the amino acids and proteins that come with it
Carbohydrates are essential to provide energy for the body because they are quickest source of the energy for the body. They meet the body's immediate energy needs and are the first source of the energy the body uses.
sunlightThe energy that drives metabolism in animals comes from the food they eat. Food is converted to calories, which is the energy that fuels different systems in the body.
your body gets energy from your movement
Thermal energy is the energy possessed in a body due to its temperature.Hotter the substance more the thermal energy will be and vice versa. However ,kinetic energy is the energy of a body possessed in it due to its motion.Higher the velocity of body more will be the kinetic energy.