Do you enjoy your morning coffee? Well, you’re not alone.

There is no doubt that caffeine is the most widely used psychoactive drug in our culture. Many of us use it to increase our alertness, energy, or wakefulness. As caffeine fits so easily into our productivity-focused culture, we don't always pay attention to it the same way as we do alcohol, tobacco, or other recreational drugs.

And yet, it does have a profound impact on our lives.