This exercise will help improve the extensibility of your inner thigh muscles and improve hip external rotation.
Start lying down on your back and bring the bottoms of your feet together. Relax your thighs, pull your shoulder blades down away from your head and neck. Take 5 slow deep breaths inhaling through your nose and exhaling through your mouth. To progress the stretch, press the knees down towards the ground for 5 seconds and then relax for 5 seconds. Repeat 10 times.