[2muchcoffeeman]

Unfortunately for us, the delivery vehicle for caffeine can taste great and the process to remove the caffeine can leave a substandard result.

I’d totally use other nootropics in managed doses if I could do so long term with no serious side effects.

[neltnerb]

Offices are also way too cold, I will just sit there drinking hot water if I don't want the caffeine...

[kqr]

It might go beyond the temperature of the liquid, though: caffeine is a vasoconstrictor, meaning it restricts blood flow to your extremities, meaning you'd be better at retaining your core temperature. (That said, you should also be "feeling" colder in your hands and feet.)

(This is the opposite effect of alcohol, which is a vasodilator: it makes you feel warm by filling your extremities and outer layers with blood, but at the cost of actually losing core temperature. Hence drunk people easily freezing to death in winter.)

[phonypc]

Caffeine is generally thought of as a vasodilator. It's a bit more complex than that, but it definitely doesn't restrict blood flow to your extremities.

[distances]

I don't find coffee to have much of a warming effect. My solution to cold offices is three shirts and wrist warmers.

[taude]

I've actually quit coffee a few times for 6+ month periods. One thing you'll notice, or at least I did, coffee just didn't taste that good, and your mind quickly connects the caffeine rush it's going to get. Even trying to drink decalf wasn't a worthwhile endeavor (even though there's still a tiny bit of caffeine in it). I imagine, it's a variation of a junkie not loving to put the needle in their arms, but anticipating their high.

Note: I don't drink coffee "drinks" like mochas, lattes, frappachinos, etc. just drink black coffee, without sugar and milk .