Sir: What is this rubbish about exercise making children happy (report, 28 June)? My happiest moment at school was sussing out how to avoid games. I realised that it is almost impossible to force an adolescent to take part in games - what sanctions do you impose on someone who prefers to be kept in working?
My proud boast is that I've taken no exercise since 1957. At 57 my only problem is hayfever - somehow I don't think compulsory sport would have averted this, but I am thinking of taking up smoking...
Hemel Hempstead, Hertfordshire