[huntoa]

It's not that much caffeine, his 3 liters of coke contains about the same as 1 liter of brewed coffee.

1 standard can of diet coke (375 ml) contains 48 mg caffeine -> 128 mg/liter. So 3 liters (8 cans) contains 384 mg caffeine. Brewed coffee contains ~400 mg/liter.

[LAC-Tech]

I feel like one litre of brewed coffee is a lot of caffeine!

[ahartmetz]

It is! I drink one 300ml mug of strong coffee (or two of thin coffee) a day and that feels like enough for sure.

[baby]

I think I would probably die if I drank 1 liter of coffee

[ycombinete]

400mg is the suggested daily limit. It is a lot of caffeine.

[justinlloyd]

I should probably rethink my 8 to 14 espresso shots per day then.