December 2025

coffee

Will Coke Zero keep me awake?

Will Coke Zero keep me awake? Caffeine keeps you awake by blocking your brain’s sleepiness (adenosine) receptors. Diet coke contains 46 milligrams of caffeine per 12 fluid ounces (355 milliliters) while coke zero sugar contains 34 milligrams of caffeine per 12 fluid ounces (355 milliliters). From a health perspective, both are similar—neither contains sugar or

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