If you're eating a protein bar as a pre-bed snack, you could be creating excess gas and bloating. "Different types of sugar can be gas producing; think high-fructose corn syrup and sugar alcohols," says Michalczyk. "Remember even chewing gum contains some sugar alcohols, so if you're chewing a lot of gum or snacking on sweets, you may experience stomach discomfort and bloating shortly after," she adds.
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