We've considered our drink & cheesecake choices. Is it reasonable we come clean about how we drink coffee? Caffeinated or, black or, sweetened, how many cups in a day, affect your sleep? I drink about 4 cups a day with no problem sleeping. Just a little low-fat milk and a packet of Splenda. For years it was condensed milk and two sugars but no more. By the way, let's exclude all talk about designer lattes. That can get way out of hand. I should know, being a Seattle native.