Up to a thousand milligrams of caffeine is considered safe for most people, which translates into about 10 cups of coffee a day.

I don’t see the point in caffeine without coffee. Or coffee without caffeine, for that matter,” I informed him.

I used to smoke cigarettes, ten a day, but gave up when I was 28. Now my vice is several cups of coffee a day, which isn't great if you're prone to weak bones as I am, as caffeine can leach calcium.

Certainly the caffeine in coffee, whether it's Starbucks or generic coffee, is somewhat of a stimulant. But if you drink it in moderation, which I think four or five cups a day is, you're fine.

I have to have my coffee. I probably have three cups a day, but only before noon.

I don't like coffee but I need caffeine.