By: K. Aleisha Fetters
GettyIf you're looking for your next pick-me-up, ask yourself: Should you run on Dunkin or get your wings from Red Bull? The answer's in your cup.
While an eight-ounce cup of coffee contains about 150 milligrams of caffeine, energy drinks pack anywhere from 154 mg in a 16-ounce Red Bull to 505 mg in a 24-ounce Wired X505. And the most popular juicer around, 5-Hour Energy, has 200 mg of caffeine in a single-serve shot.
Caffeine blocks fatigue-inducing neurotransmitters, increases neural firing, and triggers the release of dopamine and norepinephrine in the brain, according to research from McGill University. All that equals a better mood, a sharper brain, and a faster metabolism. One caveat: Excessive intake has been linked to a variety of adverse effects, including high blood pressure and even sudden death. About 200 to 300 mg a day is a safe zone for most people, according to the Mayo Clinic.
But when it comesRead More »from Coffee Vs. Energy Drinks: Which One is Better for You?