Based on the context and the answer, generate a question. 

Context: The field was mainly club runners in colours ... Calne were present , as were White Horse Runners , and Chippenham Harriers . There were proba bly only two or three non aligned runners , one of whom was accompanied by Charley the dog I 'd bumped into several people I knew before the off , and despite being a " clubby " race it was very relaxed and friendly . And I was proudly sporting my new birthday present , the tri suit . I 'd warmed up on the treadmill in the gym as it was convenient , with a kilometre to get me sweaty .

Answer:

They wanted to do well in the run .



What may be the reason for their treadmill warm - up ?