More foods are using caffeine as a supplement, and it makes sense to pair real energy (i.e., calories) with the brain-boosting effects of caffeine. Caffeine works by blocking a neurotransmitter that induces tiredness from connecting with the brain cells they act on - it's not truly giving you energy, it's just stopping you from feeling lethargic!
People have different tolerances to caffeine because it takes certain enzymes to degrade it over time. If you make less of those enzymes, the caffeine will be in your system longer. On average, the half-life of caffeine is 5 hours, which means that half the caffeine you have at 9am is still circulating at 2pm. So pay attention to your body, and watch for symptoms of over caffeineation like speeding heart rate, jittery nerves, shaky hands, or sleep issues! Some bars contain caffeine equal to a cup of coffee, while others use coffee just for the flavor - check which bars have a significant amount by referring to their labeling.
These bars all taste fabulous, and feature a delicious coffee flavor! Perfect for having on the go, and guaranteed not to spill in the car.