I was 'ok' until I was waiting for the train to Leeds at Kings X, then it just hit me like a wall (bear in mind I'd had a pretty hectic schedule for the previous 2 weeks - lots of travelling, partying etc without a break). Staying awake on the platform was a struggle, but the good thing was that as soon as I got on the train I slept soundly for 2 hours and was then more or less functional for the rest of the day. Certainly had an early night though!
