Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to become a contortionist [title] Be aware of the two different types of contortionists. [step] There are two different types of contortionists: front benders and back benders. These two types are based on the contortionist's ability to hyperextend their spine.

Ending1: [substeps] Rear benders stand up straight and extend their spine from their rear end. Front benders stand on their heels with their rear ends flaring out to the sides. Ending2: They are also able to do legato (pulliative movement). [substeps] Back benders are straight backs with curved sides and curve control. Ending3: Back benders means extending from one end of the spine to the other, and back benders means the front of the spine to the right or left. [substeps] Front benders put pressure on muscles and adaptations of the spine to improve its function. Ending4: A front bender is often better at forward bending and a back bender is often better at back bending. [substeps] Women are known to be good back benders, but men can also develop flexibility in back bending positions with enough practice, so don't be discouraged just because of your sex.

Answer format: ending1/ending2/ending3/ending4