Nutrition Diet: What is the source of energy for the body?
                                
                                
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                                    4 min read                                
                            
                                Did you know that your body produces an estimated 40-60 kg of ATP daily to fuel its functions? This remarkable biochemical process is at the heart of the answer to the question: **What is the source of energy for the body?** It is a complex system of metabolic pathways that converts the food we eat into cellular fuel, driving every activity from a single thought to a marathon.