英文短句correction,

英文短句correction,
请帮我看看我的paragraph有没有grammar mistake
According to the data,drinking only one cup of the regular Pepsi will not increase your heart rate.If caffeine can raises our heart rate,the heart rates of those 11 students who had the regular Pepsi should be increases; however,the data shows only five students had their heart rates increased.After taking the caffeine free Pepsi,five out of 11 students had their heart rates increased.Therefores,drinking a small amount of caffeine can't raises your heart rate.

原文the heart rates of those 11 students who had the regular Pepsi should be increases,应为the heart rates of those 11 students who had the regular Pepsi should increased

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