Hollow Body Holds
How To: Start lying flat on your back with your arms above your head, legs together, and toe pointed. Lift your upper back, shoulders, arms and legs off the ground. While doing this push your lower back to the ground and engage your front core muscle. If you feel pain in your back while performing this exercise you might have an arch in you lower back and you will need to turn your hips under more so that your back will lie flat.