Many women are quick to shy away from strength training and building muscle, thinking the terms are synonymous with bodybuilding. But by neglecting this part of your daily, get-in-shape routine, you’ll be selling yourself short when you hit the gym to burn calories. Building muscle "raises your metabolism," says New York-based trainer Larysa DiDio. "You burn more calories after you strength-train than after any other type of workout," she adds. Read on for more expert tips.