I drink 3–4 cups of coffee in the mornings, between about 7 and 9 a.m. but zero the rest of the day. Oh man…last winter I got a large Mocha one evening around 5 o’ clock on my way home at a local coffee drive through. It was a cold, stormy afternoon and it didn’t even occur to me that the caffeine would be an issue, until…I was tossing and turning all night and couldn’t fall asleep til 4 a.m. Never. Ever. Again. haha