Caffeine is a stimulant which can cause restlessness and difficulty in sleeping.
Caffeine is a diuretic, which acts to help your body lose water by increasing the amount of urine, defeating the purpose of drinking 64 oz. of water a day.
Caffeine can increase your heart rate.
The effects of caffeine begin about 15 minutes after you consume it and can last up to several hours.
Many caffeinated beverages contain sugar, which adds caloires and contributes to weight gain.
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