I drink coffee and tea at work! (try having a deskjob without, I know I couldn't!)
I'll occasionally have a JagerBomb or 13 on a night out, or an energy drink when I nip to the shop and want something sweet. I used to have a massive problem with energy drinks, if I didn't have one in my hand, I'd be going to the shop to buy a new one, but that's all changed now and I have it in moderation. No more shakes and heart palpitations for me :P (if you are planing on having JagerBombs, be ready for the room spinning when you try to sleep, it's not easy.)