I was not a participant in either of these two medical studies.
Caffeine Disrupts Sleep for Morning People, but Not Night Owls
“…for the early risers, the more caffeine in their bodies, the more time they spent awake during the night after initially falling asleep. This was not seen in the night owls.”
‘Morning people’ and ‘night owls’ show different brain function
“…In morning people their cortical excitability actually decreased throughout the day. It was highest in the morning and lowest in the evening,… It was the opposite for evening people; their brain activity was highest at 9 p.m.”
Those of you who know me, all know that I am a night owl who drinks a lot of coffee, and routinely finishes a pot of coffee before going to sleep. I used to think it was only me. However, after reading these medical studies, I wonder how many others out there are also night owls with a high tolerance for caffeine?