I went near-caffeine-free the last two weeks: Two shots of espresso in the morning, only decaf after that. (Fortunately any coffee shop worth their salt has dec

I went near-caffeine-free the last two weeks: Two shots of espresso in the morning, only decaf after that. (Fortunately any coffee shop worth their salt has decaf beans available.) What has surprised me is that I am no longer oversleeping on my days off. Before, I was sleeping until 12-1pm to catch up on sleep debt incurred during the week, and I would wake up bleary-eyed and tired. Now, I wake up around 9-10am (which coincides with my wake-up time on work days), way before my alarm clock, and I actually feel quite rested. Note that this is without adjusting my bedtime schedule at all. As someone who's been on caffeine most of his life and whose late sleep schedule is a veritable personality trait by now, this came as a surprise.