What is the optimal period for fasting?
                                
                                
                                •
                                
                                
                        
                                    
                                    4 min read                                
                            
                                According to Johns Hopkins Medicine, intermittent fasting works by prolonging the period your body burns fat after exhausting its sugar stores, a process known as metabolic switching. The truth is, there is no single 'optimal' period for everyone, as the best duration depends on individual goals, lifestyle, and how your body responds.