I just finished a whole month with no caffeine. I observe Ramadan, and so no food or drink during the day, and no point to take caffeine after sunset. The firs

I just finished a whole month with no caffeine. I observe Ramadan, and so no food or drink during the day, and no point to take caffeine after sunset. The first 1-2 days were hard, I had a headache and couldn't focus. After that, the body adapts. I have less control over my level of alertness. So if I don't get a good night's sleep, I'll probably need a mid-day nap. Luckily, my job is flexible enough to allow this (I'd say it happened once a week or so).