Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to do a high back handspring [title] Practice jumping high and back. [step] Keep doing this until you feel high enough to do a back handspring. [title] If you are at gymnastics, get a roller, jump as high as you can, until you get the feel of it.

Ending1: [title] If you are doing a head headstand, start on your hands and knees on the ground. [step] If you are doing a practice deadlift, start on the floor, then move a few inches forward until you get a good feel for your bodyweight. Ending2: [title] Use the same feel on a smaller roller. [step] Get a roller that barely touches, or doesn't touch your back at all. Ending3: [step] Then, lower your body back to the starting position, and repeat some more. [substeps] If you are a beginner you can also try doing a mountain handspring. Ending4: [step] Then, do the reverse on the other side of the mat. [title] When you feel all the way high, do it again with a handspring.

Answer format: ending1/ending2/ending3/ending4