5 ms·

The name is "being human", and it's probably not pathological: subjects kept in environments without external timekeepers (such as sunrise/sunset or clocks even

The name is "being human", and it's probably not pathological: subjects kept in environments without external timekeepers (such as sunrise/sunset or clocks even) tend to keep a 25 hour circadian rhythm. Our bodies respond strongly to food and light and caffeine. Food when you wake up, and darkness as you're going to sleep. Remember that caffeine has a half-life of up to 9 hours, so if you're having trouble winding down at bedtime, that might be attributable to the cup of coffee or soda you had at lunchtime.

pawelduda 3y ago
Up to 9 hours? More like 4-6 AFAIK
- MengerSponge 3y ago
  Speculation: I'd expect a huge selection effect w.r.t. caffeine half-life. If your physiology yields a really long caffeine half-life, you won't drink as much because it keeps you from sleeping. These people will show up in studies as "not habitual users" Not speculation *up to* 9 hours. Your Mileage Will Vary. My point was for people who aren't sleeping well, who should be extra aware of the stimulants they're taking and how long they can be active. 4-6 hours is also pretty long, which means there aren't very many lambdas between that afternoon cup and when you're trying to go to bed.
  - zemvpferreira 3y ago
    Revisit that expectation. When I sequenced my DNA years ago, I discovered that I'm a slow caffeine metaboliser (longer half-life than most) AND I'm in the population likely to drink the most coffee - I drink 5 cups per day currently, my grandpa drank 24 at his peak.
- zemvpferreira 3y ago
  The problem I've seen with sleep/caffeine research is that most of it is done with non-habitual doses. Half-life might be such and such, but people who drink a coffee after dinner for 20 years sleep better than non-coffee-drinkers who have an espresso after lunch that one time.
  - doubled112 3y ago
    Anecdotal, but exactly. I drink roughly a pot of coffee a day. Keeps me in the game. Just one more at dinner is not going to keep me awake at night. Maybe another pot, but that's still a maybe.
    - pawelduda 3y ago
      I used to drink yerba mate almost daily (higher caffeine content than average coffee) because I thought it kept me in the game. At one point I had to go on very strict diet due to health issue so took one week break. I never felt urge to drink it again, my avg energy levels are higher, and anxiety levels lower since stopping (2 months so far)

pawelduda 3y ago

Up to 9 hours? More like 4-6 AFAIK

MengerSponge 3y ago
Speculation: I'd expect a huge selection effect w.r.t. caffeine half-life. If your physiology yields a really long caffeine half-life, you won't drink as much because it keeps you from sleeping. These people will show up in studies as "not habitual users" Not speculation *up to* 9 hours. Your Mileage Will Vary. My point was for people who aren't sleeping well, who should be extra aware of the stimulants they're taking and how long they can be active. 4-6 hours is also pretty long, which means there aren't very many lambdas between that afternoon cup and when you're trying to go to bed.
- zemvpferreira 3y ago
  Revisit that expectation. When I sequenced my DNA years ago, I discovered that I'm a slow caffeine metaboliser (longer half-life than most) AND I'm in the population likely to drink the most coffee - I drink 5 cups per day currently, my grandpa drank 24 at his peak.
zemvpferreira 3y ago
The problem I've seen with sleep/caffeine research is that most of it is done with non-habitual doses. Half-life might be such and such, but people who drink a coffee after dinner for 20 years sleep better than non-coffee-drinkers who have an espresso after lunch that one time.
- doubled112 3y ago
  Anecdotal, but exactly. I drink roughly a pot of coffee a day. Keeps me in the game. Just one more at dinner is not going to keep me awake at night. Maybe another pot, but that's still a maybe.
  - pawelduda 3y ago
    I used to drink yerba mate almost daily (higher caffeine content than average coffee) because I thought it kept me in the game. At one point I had to go on very strict diet due to health issue so took one week break. I never felt urge to drink it again, my avg energy levels are higher, and anxiety levels lower since stopping (2 months so far)