![Chris Ryan's SAS Fitness Book](http://monsterbookshop.co.uk/cdn/shop/files/9780712684392_0a8bc6ce-57a2-4f0e-9617-91ae67fca28d.jpg?v=1714068031&width=1445)
Chris Ryan, an SAS hero, has adapted techniques and honed his routines to devise a three-month programme that's both extremely easy and effective for males of all ages and lifestyles. He combines endurance training and work-outs for strength and suppleness with a guide to nutrition and all-round health maintenance for men.