Perform a Rings pushup , but let the rings move outward to the sides on your way down.
Push yourself back up to the starting position.
Form tips
Keep your Abs engaged and a posterior Pelvic tilt .
Push your shoulders forward at the top ( Shoulder protraction ) and maintain your shoulders pulled towards your hips the whole time ( Shoulder depression ).
Risks
The elbows-out position can put undue stress on the shoulder. Practice this exercise carefully to avoid injury. Keep your shoulders pulled towards your hips ( Shoulder depression ) to reduce the risks.