Armstrong charged ahead for a mile or so, Isaacs, whose shaved head, Marine’s physique, and South African accent give him the bearing of a really friendly drill sergeant, said his approach was to keep things interesting and Armstrong injury-free. "The

and plyometric drills. "Lel's and Wanjiru's legs are like coiled springs; when they run they barely touch the ground," he says. "When a runner does a lot of gym work, it has a dampening effect on the springs. Watching runners go by in the park, I can spot which

, West Sussex(2/5/06)93100%16 ratings4542nd Classic Freckleton Half-Marathon, Lancashire(6/18/06)9398%31 ratings46Coniston Trail Race, Cumbria(10/7/06)9398%27 ratings47Terminator 10, Wiltshire(2/26/06)9397%31 ratings48Stella Drilling Balmoral Tartan 10K