9 Exercises For A Flat Stomach

Plank Crunches

Plank crunches strengthen the whole body. 

To do it right, rest on your forearms and feet. Focus on feeling the tension in your core. Beginners can hold a plank for 1 minute.

If you’re more advanced, you can twist your body, turning your chest to the right and left. To last the full minute, alternate between tensing and relaxing different muscles.