Drinking strong coffee before exercising increases fat-burning, new study finds

Yes drinking two 12oz Talls at Starbucks every day is not good for your sleep.

Nespresso capsules have 60g for reference.

Do you mean mg rather than g?

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?

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

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.

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.

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

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.

To everyone replying - "i can sleep even after drinking 100 coffees" - caffeine consumption affects certain stages of your sleep even though you might fall asleep, source is the book 'why we sleep'. All stages of your sleep are important, so if you are only getting rem sleep it is not good.