I have cut down a lot on my caffeine consumption. I am down to a solo espresso in the morning. I do find that I am sleeping better. It used to be that I could have an espresso at midnight and be fast asleep half an hour later, but now caffeine does affect my sleep - one of the other stupid aspects of aging. Anyhow, today I thought, "Why don't I give up coffee completely?". It suffices to say that it lasted until noon.