Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to wear shin guards [title] Measure your leg. [step] An improperly fitting pair of shin guards can impede athletic performance. It can also be dangerous-shin guards that are too small won't fully cover your leg and leave you open to physical impact; shin guards that are too big can trip you and cause an injury.

Ending1: Instead, you should go for a pair that supports your legs and keeps you in good shape. [substeps] Measure your leg from the bottom up. Ending2: Therefore picking the right size is essential for good performance and safety. [substeps] Measure from two inches below the knee to just above the bend of your ankle. Ending3: [substeps] A good rule of thumb is to choose thicker shin gloves to wear when you're exercising. Thicker gloves will help you get a good initial workout and to avoid cutting yourself too short. Ending4: [substeps] The best measurement for shin guards is just under the armpit, where your elbow and wrist meet. The length of the shin tape works best for measurement.

Answer format: ending1/ending2/ending3/ending4