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As you lower your hips, keep your legs straight but allow your arm to bend as you push forward so that your chest nearly grazes the floor like a dive bomber.
Press back through your hands to full arm extension and repeat for the required number of reps.
Curve your back and extend your arm without locking out; your face should be looking forward the top. Hold for a count and reverse direction, pushing your hips up so that you're back in an inverted V.