But too much of a good thing could pose some health problems.
While there is no official rule as to how much you can drink, many health professionals say American caffeine consumption is out of control.
Caffeine has been linked to high blood pressure and poor heart health.
Some studies even suggest the chemical that gives you a boost can also decrease the amount of calcium you absorb.
No American health organization has established guidelines for how much is too much.
However, dietitians say larger serving sizes keep folks guzzling huge amounts and moderation can be difficult.
"Caffeine in high amounts definitely makes people jittery, and even though there are benefits towards drinking moderate caffeine consumption, the average person does not do that; they drink a real lot of it," says Angela Jenkins, a registered and licensed dietitian.
The suggested serving size for coffee is 6 ounces; however, often times the smallest cups found at gas stations was twice that.
Twelve ounces of soda is one serving.
Ninety percent of Americans consume caffeine.