Start on your hands and knees, with your hands under your shoulders, and knees under your hips.
Keep your elbows and your back straight throughout this exercise.
Bring your chest down towards the floor by sinking into your shoulders, allowing your shoulder blades to relax towards your spine.
Hold this position before lifting your body away by driving the heel of your hands into the floor, rounding your shoulder blades around your body.
Your back should not round or arch during this exercise.
