Are you addicted to your morning cup of coffee? Though caffeine takes about 15 to 20 minutes to kick in, its effects can last up to 14 hours, depending on the person. No wonder coffee is so addictive!
Of course, different coffees contain different amounts of caffeine, but contrary to what many may believe, light roasts tend to contain more caffeine than dark roasts. It should also be noted that decaf does not mean the coffee contains zero caffeine.
Surprisingly, beyond coffee and tea there are 60 plants that contain caffeine. 90% of the world uses caffeine in some form or another. Be careful not to take in too much caffeine, as 10-20 grams is considered a lethal dose. That’s the equivalent of drinking 4.69 gallons of coffee. They say, after all, that what doesn’t kill you, only makes you stronger though, or at least will you keep you up forever!