Take a neutral grip on the rings as you assume a push up position, hands about shoulder width apart, feet together. Brace your core, squeeze your glutes, PPT (tuck tailbone).
Descend into the bottom of the push up, keeping the elbows tucked in tight to your body, and maintaining total body tension.
Start to straighten one arm, drive the ring directly out to your side, keeping the other elbow tucked in tight. Fully extend the arm as your reach outward, pause and the bring the elbow back in and switch sides & alternate for repetitions.