Is it true that if I say: "I've had 5 cups of coffee today" I intend to drink more today and if I say: "I had 5 cups of coffee today" I am not going to drink any more coffee today?
I find this really confusing, because present perfect talks about what has happened until now. If I've had 5 cups of coffee today, it will remain true until the end of the day even if I'm not going to drink any more coffee.