Some last all day, some last all day, without you knowing like for instance, if there's no crash...
if you're not using your natural body's energy, you're squeezing the natural body's energy artificially, which is what caffeine does, which will in turn shorten your life...
If it's a Woke Up! it's okay!
But actually the truth is you have to look at how much caffeine is in the drink.
As long as you are drinking less than 250 milligrams of caffeine a day, you'll typically be OK. But, ...