Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to roll a kayak [title] Practice learning to roll in calm, shallow water. [step] Have a friend spot you while you are learning how to roll. It's always a good idea to establish a distress signal, too, so you can communicate if you need help.

Ending1: [substeps] Setting up to roll is important not only during practice but also during normal kayaking. It will help you roll over quickly and efficiently. Ending2: Try spinning around in the water with your friend and having them roll you if they are similar to you in size to avoid sending messages to each other. [substeps] You can also try demonstrating " hand paddling " that will help you really control your kayak. Ending3: [title] Be sure to get your gear wet beforehand. [step] The more time you spend on wet surfaces, the easier it will be to shake and roll. Ending4: [title] Understand push-ups, sit-ups, and chin-ups. [step] The most important goal is to get into the correct position.

Answer format: ending1/ending2/ending3/ending4