据许多人描述，这种头痛的感觉，像是被棒球球棒砸上了一记。
Many people with this say it's like being hit with a baseball bat.
一类是认为饮料冷冻了你鼻窦内的空气，导致你前额附近的鼻腔血管收缩，产生了类似于偏头痛的感觉。
The drink may chill the air in your sinuses and cause the blood vessels in the nasal cavity near your forehead to constrict, creating pain similar to a migraine.
许多人感觉咖啡因可以使他们的神智更加清楚。高剂量的咖啡可以引起焦虑、头晕、头痛、紧张不安，亦会影响正常睡眠。
Many people feel that caffeine increases their mental alertness. Higher doses of caffeine can cause anxiety, dizziness, headaches, and the jitters. Caffeine can also interfere with normal sleep.
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