Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to get faster at swimming freestyle [title] Exercise your ankles. [step] By working your ankles out, you'll build ankle strength and flexibility. Increased strength and flexibility will help you start faster and turn quicker.

Ending1: [substeps] To start, stand with your feet together in front of you, balancing on your toes or on a padded surface. Lean forward and place your hands on your ankles for balance. Ending2: Water exercises will strengthen and tone your ankles, too. [substeps] Sit in water for 10 to 15 minutes before swimming. Ending3: To accomplish this, commit to exercises like : [substeps] Skipping rope standing on one leg squats ankle rockers. Do this by sitting on the back of your ankles, leaning back, and lifting your knees upward. Ending4: Strive to start at one of your ankles and work your way up towards your ankle. [substeps] Start by standing on your raised foot.

Answer format: ending1/ending2/ending3/ending4