Latissimus, Forearm, Trapezius, Shoulders, Core, Back
Grip the rings, tuck your knees and pull your hips up to an inverted postion.
Depress and protract your scapula, brace your core, keep your legs tight.
Continue pulling your legs through the rings, rotate the rings so your palms are facing away from you, and lower your hips down toward the floor.
Stay tight don't let your scapula retract, & keep your arms straight.
Descend so your hips are lower than your shoulders, and then pull yourself forecfully back into an inverted position, exhaling on the way up to the start, hips above your head.