Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to stretch your inner thighs [title] Reach for your toes. [step] This very basic stretch helps lengthen muscles in the back of your thighs as well as the inner section. Remember to do this with pointed toes at first and then with your toes flexed.

Ending1: You'll soon find the stretch second. [title] Stand with your feet shoulder width apart. Ending2: [substeps] As you reach for your toes, place the balls of your feet firmly on the floor so as not to damage your lower limbs. Put your hands back on the floor as if you were grabbing something to hold onto. Ending3: Hold the position still for at least 20 seconds. Don't hold your breath while you're stretching. Ending4: [title] Extend your thighs as far as they can go. [step] Hold for a few seconds, and then slowly bring your legs into an inverted backbend.

Answer format: ending1/ending2/ending3/ending4