• 20oz of coffee is not “medically significant amounts” of caffeine. It’s just a lot of caffeine. Dangerous levels are significantly higher. It wouldn’t even be uncomfortable if you aren’t particularly sensitive to caffeine.

    The FDA doesn’t say “if you drink more than 400mg of caffeine you will die,” it says “taking under 400mg / day is not generally believed to be associated with ill effects for healthy adults.” There is a stark difference between a threshold where a health agency is saying “everything under here is OK” (they would aim low to err on the side of caution) and a threshold where “everything above here is dangerous.”