A Beginner's Guide: How to do intermittent fasting?
                                
                                
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                                    4 min read                                
                            
                                Johns Hopkins neuroscientist Mark Mattson, who has studied this approach for 25 years, notes our bodies are evolved to go many hours without food, a state of "metabolic switching". This guide explains exactly how to do intermittent fasting to leverage this natural process for health and weight management.