I've seen this thread
, but it was more about confirming the effect rather than explaining it.
I've had an interesting history with coffee. I like the taste, and when I was a teenager I regularly had a cup of 3-in-1 coffee a day with no particular effects. In my late teens I was diagnosed with panic disorder, and I could no longer take any coffee without feeling jittery and anxious. Within the past five years I've slowly reintroduced coffee into my life, and now I can comfortably have a cup a day.
However, instead of either getting a buzz or being jittery, coffee makes me really really sleepy. As soon as I have a cup I have a deep need to take a nap, and I can be knocked out for a couple of hours. It's not particularly restful or refreshing sleep, but it's hard to fight back the urge to snooze. This is a recent development (and slightly annoying because there are times where I could use the buzz!!).
I'm usually described as "hyper" by my friends and peers, though that usually depends on the situation - in fun energetic environments I can be very vibrant and exuberant, though when I'm at home I'm usually sloth-like and lazy. I sleep about 7-8 hours a night; the sun awakes me, so I'm usually up just before 5, and for the first few hours (if I'm not having to be awake early for any particular reason) I vacillate between mucking around on my laptop and snoozing. I don't deal well with late nights - if I'm not distracted by something I usually clamour for my bed by midnight at the latest.
Guarana, ginseng, and other energy drinks & supplements of that ilk give me a headache. There is one particular Aussie brand of energy drink (can't recall the name offhand) that hasn't effected me either way; however I've only had a small tin so I don't know if it's a fluke. I have been suspected of having ADD but have never been on treatment for it or tested professionally.
What's happening with my hormones and my brain that makes me have the opposite reaction to caffiene? Is it something I need to worry about? If caffiene makes me tired, what can I do to get a buzz (assuming that I haven't already scared people off by being highly energetic!)?