I always assumed that the reason why so many people drink caffeine is that it brightens their mood and makes them think faster.

OHHHHHHHHHH.... maybe not.

My hubby said he always wondered why I had a mood switch every time I drank it. I become cheery and talk a lot. Then a couple hours later I am back to the pre caffeine state. It doesn't have any effect on my sleep.

I was hypomanic when I returned to work after maternity leave, but I drank the coffee anyway. It got rid of the horrible anxiety I was having...so weird.

You can always tell when I am getting depressed because I drink more coffee than usual. When I am hypomanic I drink less because it takes so little for me to get the self confident euphoric effect, and I don't need the jitters too much coffee brings.

To tell you the truth, I think the effect is unique to each person.