- Starbuck's Coffee-300mg
- 5 Hour Energy- 200mg
- Dunkin' Coffee-140mg
- Red Bull- 60mg
- Black Tea-40 mg
- Green Tea-20mg
These are the numbers but what do they tell us? The beverages at the top of the list are the most potent and should be consumed at the beginning or middle of your day. Whereas black and green tea can be enjoyed throughout. Avoid taking caffeine products within 5 hours of going to sleep to prevent restless sleep. But limit caffeine uptake to 400mg/day max. Remember that you will develop a tolerance which will limit the effects.
To prevent a tolerance and restlessness, I drink coffee or black tea in the morning and green tea in the afternoon/evening. This way I am consistently focused when I need to be but have no problem crashing at day's end. Experiment to find out what works for you.
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