Brainwave is caffeine-fuelled

I have a problem. I’m addicted to caffeine.

Coffee - I can't think without it. Photo: Alex Fairhill.

My family has a running gag – if I do something forgetful or silly, it’s because my coffee hasn’t kicked in. I realised today how true that was. 
I’m not an addict in the sense that I must have six cups a day or I’ll turn into a monster – in fact, if I have too much I get jittery. I’ve had one energy drink in my life, while working a double shift; and I couldn’t concentrate, didn’t sleep that night, and vowed never again to touch the stuff.