For those fasting during daylight hours, it oftentimes means refraining from that morning coffee — and for some, cutting it out entirely to allow for restful sleep. As any big coffee drinker knows, hitting pause on drinking coffee can cause a slew of withdrawal symptoms.*
*On the other hand, for some people, quitting coffee might not bring about any changes at all! It all depends on how you and your body are wired to metabolize caffeine, and how much you're used to drinking.