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A 12-fl-oz can of Coca-Cola contains 34 mg of caffeine, and mini cans, bottles, and Coke varieties can land on different numbers.

One 1-oz espresso shot often lands around 60–80 mg of caffeine, with dose, beans, and pull time shifting the final number.

YouGov polling reports that 74% of Britons drink tea at least once a week, and 41% drink tea at home or work at least twice a day.

One 1-cup serving (8 fl oz) of plain black coffee has 2 calories, with small shifts by brew style and serving size.

Most adults can have up to 400 mg of caffeine per day, while teens and pregnancy need lower daily caffeine limits.

Most NESCAFÉ sticks fall in a 50–100 mg caffeine range per stick, yet the exact dose depends on the stick style and how you mix it.

Most people see a small heart rate shift after caffeine, often 0 to 10 bpm, with bigger jumps more likely at higher doses or low tolerance.

Milo powder has about 2.2–4.8 mg of caffeine per 20 g serve, with small shifts by recipe and scoop size.

Most cappuccinos land around 60 to 150 mg of caffeine, set mainly by how many espresso shots are in the cup.

A plain 1-cup (8-oz) tea has 0–2 calories; milk, sugar, honey, and syrups raise it fast.