I drank coffee and now everything is moving at super speed

I don't know why I keep drinking coffee, it always makes me really anxious and fast moving. Sometimes I just lose my shit and end up having a horrible paranoia filled day and sometimes I feel really awesome for 20 minutes and then crash.
Coffee doesn't agree with my body.

I drank coffee today because I couldn't focus on this historical stuff I'm reading for my Study of Religion assignment...but now I have too much energy to sit still. My leg is shaking like a crazy thing and I'm typing really fast right now, but I need to do my assignment, so I shall try and ignore it.

I'm not sure if this is better than being so tired I couldn't think...