We all know that the elbow plank is a great core exercise. But this move, like any other, can get a bit stale. And if you’re bored with an exercise chances are high your body has becomes accustomed to the exercise and you’re no longer gaining strength.   If you’re ready to add variation to your core routine, here are five new moves to strengthen

your mid-section courtesy of Core Performance Women . These exercises target the back, glutes, abs, and inner thighs. Add two to three of these exercises to your strength training sessions and you will notice a more toned middle and stronger workouts all around. Photos courtesy of Core Performance Women (Penguin) View Slideshow ›

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5 Moves to Work Your Core