If you want a well-shaped body, not a bulked-up, hardcore look, here’s a gentle, simple way to look svelte and feel great. Special exercises target specific muscles with light to medium weights, combined with techniques to improve cardiovascular health. Tips on diet and body care enhance your training and lessen the time it takes. If you already enjoy an endurance sport, subtle changes in your play, 30 minutes a day, three or four times a week, will speed you to your goals. Soon you’ll be stronger and more resistant to pain and injury, especially sedentary work-related sprains and strains. Best of all: ways to make body styling last so you don’t get bored just when things really start to work.