But that makes no sense. Caffeine binds to adenosine receptors, which have to do with how sleepy you are. But they aren't doing anything in the morning as you've just woken up (think of them as a counter of how long you've been awake).
I mean, if you're only going to drink caffeine in the morning you might as well go without. No need for the sweats, frequent visits to the loo and dehydration if you're not even going to use its upsides.
>Any coffee before lunch is just a placebo really.
No.
I understand what you're trying to convey but calling coffee before lunch a placebo is definitely going too far.
It's true that caffeine binds to adenosine, but 1) there is always a non-trivial baseline of adenosine in your system (and for many, morning adenosine levels are high in spite of having just slept) and 2) there is more than just caffeine in coffee.
I would guess they're one of the few lucky people that wake up feeling refreshed and perky in the morning. Me, I feel like zombie usually the first 30-45mins unless I have some caffeine shortly after waking up.
You would need people that have been caffeine free for a long time as to not have withdrawals effect the results. I would assume there would be a lot of variables in people caffeine responses which would be hard to control.
But that makes no sense. Caffeine binds to adenosine receptors, which have to do with how sleepy you are. But they aren't doing anything in the morning as you've just woken up (think of them as a counter of how long you've been awake).
Any coffee before lunch is just a placebo really.
From wikipedia: http://en.wikipedia.org/wiki/Adenosine > Caffeine's principal mode of action is as an antagonist of adenosine receptors in the brain.
I mean, if you're only going to drink caffeine in the morning you might as well go without. No need for the sweats, frequent visits to the loo and dehydration if you're not even going to use its upsides.