Understanding the Sugar Crash: Why Do I Feel So Bad After Eating a Donut?
                                
                                
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                                    4 min read                                
                            
                                According to a study published in *Nutrients*, a significant portion of the adult population in the United States gets more than 15% of their daily calories from added sugar. This overconsumption can lead to a dreaded “sugar crash,” explaining why you feel so bad after eating a donut.