Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to perform a gymnastics routine to gain a perfect score [title] Note which elements of the floor routine are likely to be a challenge. [step] A floor routine contains a lot of tricky parts; here are the ones most people struggle with : [substeps] Dance motions sticking landings perfectly. [title] Improve your dance routine.

Ending1: [step] The feet and back of the floor can take a lot of time, especially if you're walking around before and during your competition. Exercise helps to promote lean muscle mass, it also helps to be maintained by improving your leg strength and incorporate more non-taxing dance moves. Ending2: [step] Something that could be tough for all of us is having to rely on dance leads and agents and make tactical moves. Having a routine that fails or not meeting the dance spots will produce a problem for you. Ending3: [step] For the dance, do it exactly as your coach taught you. Suggest any new ideas to your coach at practice, not at a meet; that way you have plenty of time to practice and get it right. Ending4: [step] How you do this will depend on what version of the floor you are using. Simply include step-in heel on the other foot and you should improve it in the following steps : [substeps] Balance on one foot.

Answer format: ending1/ending2/ending3/ending4