Those getting rather cocky about their ability to stand on one leg (Letters, 26 June) should try doing the exercise with their eyes closed. This will bring them back down to earth much more quickly than they expected.
Ron Brewer
Old Buckenham, Norfolk
• I am 93 and cannot stand on one leg. I can, however, touch my toes with (almost) straight legs. How much longer do I have?
Joyce Bailey
Saffron Walden, Essex