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Answer:
Heat from human activities like us, machines, and electrical devices can be both helpful and harmful. It helps cook food, keeps us warm, and power engines and factories.
For example, heating systems make homes and workplaces comfortable, and engines need heat to work. But too much heat can be dangerous. It can cause burns, worsen climate change, make machines and electronics overheat and break, and use more energy, which costs more and uses up resources.
It's important to manage heat well to get the benefits and avoid the problems.
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The metabolism of the human body produces heat.
Heat produced by the human body is through metabolic activities. Chemical reactions that happen within cells are the ones responsible for producing heat. Energy is being produced when there is a breakdown of food as well as consumption of oxygen. Heat is converted in this process. It is the by product of metabolism.
The human body produces heat in the process of thermogenesis. Heat is the primary product of metabolism. This process is being stimulated by cold exposure and the release of norepinephrine.
The muscles of the body produces heat by shivering. There will be a rapid contrastions that generate heat sent by the hypothalamus to the skeletal muscles. This will lead to the an increase in body temperature. Shivering can cause an increase of oxygen consumption as well as risk of hypoxemis.