3 ms·

Source? I drink a fair amount of coffee every morning (not any after 10am) and never had any sleep issues. The half life for caffeine is somewhere around 6 hour

Source? I drink a fair amount of coffee every morning (not any after 10am) and never had any sleep issues. The half life for caffeine is somewhere around 6 hours, no?

nwienert 6y ago
Closer to 10 or 12 for many, it has a high variance in humans.
csa 6y ago
Anecdata, but one tall (actually, even one short) at 8am will typically postpone the time I fall asleep by 4 hours and will typically reduce my sleep by an equal amount (i.e., I wake up at the same time despite falling asleep later). I’ve run some experiments on myself, and this lasts for days at a time with one tall in the morning. If I keep at it for several days, I will crash early one evening, but still only sleep for 4 hours. It’s a nightmare for someone who typically sleeps 8 hours a night — I just feel fog-brained all the time. That said, workouts are super easy. If I had a tall in the morning and evening on a regular basis, ugh... I can’t even imagine. I did this once for extra energy during a sports tournament (we won), but I basically had to drink myself to sleep each night. Multiple doctors have told me that caffeine sensitivity varies from person to person, but I am on the unusually sensitive side.
- 6510 6y ago
  It varies a lot. I can drink a pot of strong coffee before going to bed. I do this regularly, never any problem sleeping.
senectus1 6y ago
back when i was drinking coffee (gut has changed with age... i can't drink it anymore), It never stopped me from sleeping, it just made me not want to go to sleep. If I knew i really needed to sleep i could at any time.
enominezerum 6y ago
Source is Anecdotal. I respond very well to caffeine, though I am a bit dependant on it. My wife, nothing. I can drink a Monster and feel good. I am 6' 240lbs, she is 4'6" and 90lbs. I can almost microdose caffeine depending on what I am doing... Sometimes it is an energy drink, sometimes cold brew undiluted, sometimes drop coffee. Shoot, at Starbucks I tend to be a "green eye" type of man and laugh when they ask if I want space for creamer. Unless I pound back a massive amount of caffeine within 2-3 hours of bed I have no issues sleeping; then again, I have never had issues sleeping and the few times I do forget and drink caffeinated before bed, it only delays me a few hours or results in me reading a novel into the night.

Source? I drink a fair amount of coffee every morning (not any after 10am) and never had any sleep issues. The half life for caffeine is somewhere around 6 hours, no?

nwienert 6y ago

Closer to 10 or 12 for many, it has a high variance in humans.

csa 6y ago

Anecdata, but one tall (actually, even one short) at 8am will typically postpone the time I fall asleep by 4 hours and will typically reduce my sleep by an equal amount (i.e., I wake up at the same time despite falling asleep later). I’ve run some experiments on myself, and this lasts for days at a time with one tall in the morning. If I keep at it for several days, I will crash early one evening, but still only sleep for 4 hours. It’s a nightmare for someone who typically sleeps 8 hours a night — I just feel fog-brained all the time. That said, workouts are super easy. If I had a tall in the morning and evening on a regular basis, ugh... I can’t even imagine. I did this once for extra energy during a sports tournament (we won), but I basically had to drink myself to sleep each night. Multiple doctors have told me that caffeine sensitivity varies from person to person, but I am on the unusually sensitive side.

6510 6y ago
It varies a lot. I can drink a pot of strong coffee before going to bed. I do this regularly, never any problem sleeping.

senectus1 6y ago

back when i was drinking coffee (gut has changed with age... i can't drink it anymore), It never stopped me from sleeping, it just made me not want to go to sleep. If I knew i really needed to sleep i could at any time.

enominezerum 6y ago

Source is Anecdotal. I respond very well to caffeine, though I am a bit dependant on it. My wife, nothing. I can drink a Monster and feel good. I am 6' 240lbs, she is 4'6" and 90lbs. I can almost microdose caffeine depending on what I am doing... Sometimes it is an energy drink, sometimes cold brew undiluted, sometimes drop coffee. Shoot, at Starbucks I tend to be a "green eye" type of man and laugh when they ask if I want space for creamer. Unless I pound back a massive amount of caffeine within 2-3 hours of bed I have no issues sleeping; then again, I have never had issues sleeping and the few times I do forget and drink caffeinated before bed, it only delays me a few hours or results in me reading a novel into the night.