The amount of caffeine you're consuming can vary significantly depending on the type and brand of the caffeinated product, the serving size, and the brewing or preparation method.

The right time to have caffeine depends on your personal preferences, tolerance, and how caffeine affects your body. It's essential to pay attention to your body's responses and adjust your caffeine intake accordingly to ensure it doesn't interfere with your sleep or overall well-being.

Caffeine blocks adenosine, a neurotransmitter that promotes relaxation and sleepiness in the brain, leading to increased alertness and enhanced cognitive function.