boost productivity, prevents the onset of tiredness, and may help improve your mood. Most energy drinks contain about 70 to 400 mg of caffeine in 16 ounces.
This plant that is native to the Amazon forests is full of antioxidants that fight the free radicals in the human body. With an antioxidant profile close to green tea, guarana is a powerful source of caffeine.
It helps keep your mind sharp and focused and may help relieve muscle pain and soreness. Its presence in energy drinks can vary between 1.4 mg to 300 mg.
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