Biological Clocks

* “Understanding the Early Bird,” Rosie Mestel’s fascinating April 26 article on the sleep disorder suffered by Roger Davis, sidestepped one critical issue. For those of us at the opposite end of the continuum, whose body clocks scream for us to go to sleep and rise markedly later than most people, it’s quite a different story. We must learn to live with the constant insinuation that we are lazy, undisciplined and somehow thumbing our noses at society. How fortunate for Davis that his ailment is at least given the respect of being treated as a medical problem.

ANDREA GRAHAM

Los Angeles