What is energy transfer in human?

Energy transfer in humans refers to the process by which the body converts food into usable energy to support various physiological functions. This occurs primarily through cellular respiration, where nutrients are broken down to produce adenosine triphosphate (ATP), the energy currency of cells. Energy is then distributed throughout the body to power activities such as movement, growth, and metabolic processes. Additionally, energy can be transferred between different systems within the body, such as from stored fat or glycogen to active muscles during physical activity.