It would also be interesting to see research on coffee's effect on a wide range of personality types. I've quit and haven't used in ~19months. Back then I'd drink 3-4 espresso's a day. Quitting was one of the most unpleasant and unbalancing experiences of my life. I kept a log of headaches, moods and fatigue before and after going cold turkey; and it was a long while (months) before the fogginess, tiredness, muscle spasms and irritability became manageable.
The rush and withdrawal effects of coffee on individuals seems to me to differ widely. I have friends that only got a slight barely notable buzz from it, but for me, I got the buzz, pleasure and motivation from my morning espresso. It was my on switch.
I think when I began to realise my psychological dependency was a bit unusual, was when I noticed how jittery and restless I was before my morning espresso. The first sip would correct that and bring with it a strange zen-like calm; the hustle and bustle of the day would dim to a dull hum and I would regain my presence of mind and I could function again. I promptly decided to quit.
The rush and withdrawal effects of coffee on individuals seems to me to differ widely. I have friends that only got a slight barely notable buzz from it, but for me, I got the buzz, pleasure and motivation from my morning espresso. It was my on switch.
I think when I began to realise my psychological dependency was a bit unusual, was when I noticed how jittery and restless I was before my morning espresso. The first sip would correct that and bring with it a strange zen-like calm; the hustle and bustle of the day would dim to a dull hum and I would regain my presence of mind and I could function again. I promptly decided to quit.