Is it possible for caffeine to stay in the body overnight, while one is at rest? I downed a large iced turtle latte last night between 7 and 8 p.m. This morning, when I awoke around 5:30, I still felt a wee bit wired. Could the caffeine have been still coursing through my body? Or, is it all in my head?
I’ve heard of waking up still drunk, but still hepped up on caffeine?