By law, all energy drinks are clearly labelled with
total caffeine amounts and maximum usage recommendations.
Not exact matches
... Hence, unless additional evidence becomes available indicating cumulative
total water deficits in individuals with habitual intakes of significant
amounts of
caffeine, caffeinated beverages appear to contribute to the daily
total water intake similar to that contributed by noncaffeinated beverages.»
This is probably why it increases the
total amount of volume and intensity people use in exercise voluntarily and why people tend to rate exercise at the same intensity as being easier when they take
caffeine.
Studies show that that 400 milligrams of
caffeine — a little more than the
amount found in one serving of most pre-workout supplements — taken up to six hours before going to bed can reduce
total sleep by more than one hour.
If you are sensitive to the effects of
caffeine and are using products with higher
caffeine content, then take into consideration your
total amount of
caffeine you are taking in throughout the day.