Why does coffee increase my heart rate but make me sleepy?

Why does coffee increase my heart rate but make me sleepy?

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  1. Caffeine can increase your heart rate. Feeling sleepy is not a common response to coffee, but here are two possible explanations. A warm beverage can be relaxing regardless of its chemistry. When you drink coffee may be the time when you find a moment to pause and unwind from your frantic life; that break lets you settle back, bump up you parasympathetic nervous system tone, and relax as you would on going to bed.

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  2. Possible reasons are many. I listed some below
    The warm drink relaxes you and helps you unwind.
    You are inherently tired and thus, seeked for a cup of coffee
    Tolerance to the effects of caffeine (not easy to acquire)
    Very Unlikely but possible : Health problems.
    Any of the combinations listed and unlisted.
    Also, it takes around 30 mins for the caffeine to fully “hit”.
    Take this into consideration.

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