Lamm, Steven The hardness factor : how to achieve your best health and sexual fitness at any age Steven Lamm with Gerald Sector Couzens - New York HarperCollins 2005 - xxiv, 342 p. : ill. 24 cm ISBN: 9780060755515 ISSN: 2005296375 Subjects--Topical Terms: Physical FitnessSex instruction for men Dewey Class. No.: 613.96081 LAM