this post was submitted on 09 Jul 2024
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Caffeine has a half-life in the human body of approximately 4-6 hours. So this means that the "5 hours" in 5hr Energy is just the amount of time it takes for your body to process half the caffeine away.
Therefore drinking half of a 5hr Energy would be 0 hours of the advertised level of energy. At best it would be like drinking a 5hr Energy and then immediately fast-forwarding 5 hours
It took me until your comment to realise I had skimmed over the word "half" in the OP. Now this whole thing makes sense.