How many kJ of energy is good? A personalized guide to your daily needs
                                
                                
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                                    4 min read                                
                            
                                While the average adult is often cited as needing approximately 8,700 kJ per day, this figure is a general benchmark rather than a personal target. The answer to the question, "How many kJ of energy is good?" is entirely individual, determined by a variety of personal and lifestyle factors.