Everyone knows that exercise is one of the best things you can do for your health. But most people ignore one crucial component of it: resistance training. According to federal researchers, only 6 percent of adults do the recommended minimum amount of at least two muscle-strengthening workouts each week. Neglecting resistance training – any type of workout that builds strength and muscle – is a big mistake. It increases your metabolism, lowers your body fat and protects you from some of the leading causes of early death and disability.