it produces energy, through energy.
Humans use food for energy.
Animals produce energy just the same as humans, they release energy to certain body parts and sexual organs sub-consciously. Humans have to release energy to make things work, except you do not think it.
Humans obtain energy by exercising daily,and staying in the sun
Humans can't live without energy - they have always used energy.
For Humans, as well as All other Organisms, these Biochemical processes are 'collectively' known as Respiration.
It contains a dynamo with which treadmill converts kinetic energy to electric energy. Also, kinetic energy is the result of running of humans on the machine and gaining of energy and then converting into electric energy which at least can help in lighting outdoor lights etc.
Humans get energy from the food they eat.
Humans need food to use for energy, without energy we die basically.
The main reason is that electricity is easy to transfer from one place to another, and to convert to other types of energy.
Both!
Humans primarily use chemical energy stored in food for their daily activities. This energy is extracted through the process of respiration, which converts the chemical energy from food into usable energy in the form of ATP (adenosine triphosphate). Additionally, humans also use electrical energy to power devices and equipment.