Personal trainer Kathy Kaehler believes in keeping exercise simple, especially if you spend most of your time working. She stresses that the average person doesn't need to spend money on personal trainers, expensive equipment, or gym memberships to get fit. Her book, Real-World Fitness is designed to offer effective exercises that can be squeezed into everyone's busy day. Kaehler also includes her 8 Weeks to a Show-Off Body, a program she developed for the Today Show, where she is a monthly contributor. Helpful photos demonstrate exercises, and the appendix suggests books, videos, Internet sites, and academic journals to take you further along the fitness path.