- 問題詳情:Areyousometimesalittletiredandsleepyintheearlyafternoon?Manypeoplefeelthiswayafterlunch.Theymaythinkthateatinglunchisthecauseofthesleepiness.Or,insummer,theymaythinkitistheheat.However,therealreasonliesinsidetheirbodies.Atthattime—abouteighthou...
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