Rich in protein, poultry and meat can be great additions to a busy, healthful lifestyle if you choose lean, fast-cooking cuts. Both skinless chicken and turkey breasts are ideal for quick dinners, as they are low in fat and cook up in minutes. Similarly, pork tenderloin can lend variety to your weekly meals. Beef, too, can be a sensible choice if you eat it in moderation. Flank and skirt steak are quick-cooking and versatile options. Some authorities claim that organic, grass-fed beef boasts increased nutritional value over traditional corn-fed beef, and it’s becoming more widely available.