The outer thighs, known as the Nitty Gritty at SHIFT, can be a frustrating problem area for women. Although the best exercises differ for everybody, you can tone up thighs with specific exercises as part of an overall fitness routine. The key is to stay consistent with your workouts and do a combination of cardio for fat-loss with strength training for muscle-building benefits. You will also need to eat a healthy diet that is low in calories to assist in weight-loss all over the body including the thighs.