For 12 weeks we've followed his gruelling training regime for this Sunday's marathon (and his obsession with isotonic drinks and toilet training). But with time running out, it's all going horribly wrong for David Munk.
They always say if you start dreaming in a foreign language you can call yourself truly fluent. Well, I woke up running the other morning, my legs cycling under the duvet, my arms flashing around, powering me to my imaginary finish line.
I've unconsciously started sowing the seeds of my running downfall. I'm eating anything I can lay my hands on. I'm drinking more than I should. I'm now smoking with both hands.
At 87, Jenny Wood Allen is doing the London marathon for the 13th time this Sunday - and she only took up the sport at the age of 71. Keren Williams asks if running is the secret of eternal youth or a shortcut to the cemetery