By Paul Eddison If you were devising the perfect preparation to run a marathon, fasting during the day and training through the middle of the night would not come into the equation. Last Sunday, however, Mahamed Mahamed proved that even the most unusual training can work as he booked his place at Paris 2024 by finishing fourth at the London Marathon. The 26-year-old was racing just the second marathon of his career, but produced an exceptional time of 2:07.05, making him the third fastest Briton ever over the distance. That is all the more remarkable when you consider that Mahamed is a practis…