Why do I wake up in fat burn Lumen?
                                
                                
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                                    4 min read                                
                            
                                After a night of rest and fasting, healthy mitochondria should ideally burn fat as their primary fuel source, providing a “clean” metabolic measurement. This is why a Lumen device often indicates a fat burn state when you wake up, signaling your body is efficiently using its fat stores for energy.