Is coffee good for you, and how much should you drink?

Coffee and caffeine amounts and timing.

Axis: 3–5 cups a day is fine … avoid caffeine

Answers by date: 4 records in 4 sources, newest first; the answers above are the current ones. The advice was refined (2020), never reversed, in these records.

date	who	answer	source
2020-07-28	Ali	To lift a slump Ali makes himself a cup of caffeinated coffee only before 2 p.m.; after 2 p.m. he uses a non-pharmacological way to stimulate his mind.	How to Stop Procrastinating 00:05:51
2020-06-23	Ali	Ali used to drink coffee first thing on waking; Make Time's tactic 70 says the body's natural cortisol wakes us about an hour after we first wake, so caffeine should kick in then, keeping us awake longer.	My Favourite Productivity Book of All Time 00:09:40
2020-03-24	Ali	Ali drinks a lot of coffee in the mornings to beat a slump but tries to avoid coffee after about 2 or 3 p.m., citing evidence that caffeine stays in the blood.	How to be More Productive in Lockdown 00:07:40
2020-03-19	Ali	Ali points to three to five cups of coffee a day as a way to increase alertness and vigilance.	Is Coffee Good For You? 00:17:26