Sir — However worthy the 'Doctors and Dignitaries' campaign to encourage people to take more exercise, and use facilities like the Castle Centre, may I point out that Wallingford also has a Green Gym — which is free year-round.

Wallingford Green Gym meets every Tuesday morning to use the facilities offered by the beautiful South Oxfordshire countryside. Next week, for instance, October 14, we shall be at Castle Meadows, right on the doorstep of Wallingford.

We carry out conservation tasks to improve the environment and get some serious exercise at the same time.

All the family can join in: We always have a range of tasks, so there is something for everyone. Is Green Gym as effective as conventional gym?

Well, I do both. Earlier this year I rigged myself up to a heart-rate monitor and found they were both just as good in their different ways — only Green Gym was more fun.

Jennifer Brooker, Co-ordinator, Wallingford Green Gym