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Habitual caffeine use
Light
(< 199mg) / per day
Example:
Energy Drink (> 1-2 cans per day).
Coffee Drink (> 1-2 cups per day).
Moderate
(200-400mg) / per day
Example:
Energy Drink (> 3-5 cans per day).
Coffee Drink (> 2-4 cups per day).
Heavy
(> 401mg) / per day
Example:
Energy Drink (> 5 cans per day).
Coffee Drink (> 4 cups per day).
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