Is it normal to go 12 hours without eating? Understanding metabolic health
                                
                                
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                                    5 min read                                
                            
                                Over 20% of US adults practice some form of intermittent fasting, with the 12-hour overnight fast being the most common. For most people, this is a completely normal and healthy part of their daily cycle, with emerging science highlighting its benefits for metabolic and overall health.