Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to do a standing full [title] Master prerequisite moves. [step] A standing full is an advanced gymnastic move and is not for beginners. Before you attempt to do a standing full, you should have complete mastery of a standing back handspring and a standing tuck.

Ending1: Sitting on the ground will significantly improve your health and strength. Engage your back, toe raises and the bopline move, above all, to increase your overall abdominal strength and endurance. Ending2: If you do not master prerequisite moves, it's an easy place to start trying them all on your own. [substeps] Start by creating a left and right foot that is side-by-side with your right foot facing the ceiling and your left hand on your knee with your opposite foot pointed forward. Ending3: Some other moves that are helpful to be proficient in before attempting a standing full are a high standing back tuck, a layout full twist (in a tumbling line), and a standing arabian. [substeps] These prerequisite moves will get you accustomed to the height, speed, and timing needed to successfully execute a clean standing full. Ending4: Once you know basic standard moves like overhand and the front tuck, you can do an overhand tuck. For this type of move, you must have a lot of experience, but not a lot of flexibility.

Answer format: ending1/ending2/ending3/ending4