Originally Posted by dfw
I drink espressos. I can toss down 3 double espressos in less than 5 minutes before my ride and I'm good for the day in short order. It's roughly the equivalent amount of caffeine as 6 small coffees.
A double shot of espresso has between 40 and 60mg of caffeine.
A 12oz cup of brewed coffee has about 200 mg of caffeine.
mb