We may receive a commission on purchases made from links. When you need to get your morning started with a bang, chances are it's coffee rather than tea that you'll be reaching for. Likewise, if ...

Ounce for ounce, you'll get more caffeine bang for your buck in an espresso. An eight-ounce cup of coffee has about 95 ...

Psychoactive drugs are substances that affect the brain. The types range from heroin to caffeine. These substances can affect awareness, thoughts, mood, and behavior. Depending on the situation, the ...