Please choose the correct ending to complete the given sentence: Health: [header] How to use yoga to improve digestion [title] Sit in a comfortable position. [step] There's no need to get into a complicated yoga pose to practice deep breathing and meditation, especially if you're a beginner. Sit or lay in a position where you feel stable and won't be distracted by pain or discomfort.

Ending1: [substeps] Yoga can be performed sitting or lying on a yoga mat. While standing, raise your right thigh at about a 90 degree angle, close your eyes, and slowly contract your abdomen. Ending2: [substeps] Spend a few minutes simply allowing your mind to wander as you slowly relax all of the muscles in your body. You can focus on specific muscle groups, or guide your mind toward the idea of relaxing and easing the tension in your whole body. Ending3: Any position can help you to breathe easily and efficiently. [substeps] The best position for yoga is to sit with your feet flat on the floor, front and back, shoulders and hips tucked in, toes pointing slightly forward. Ending4: [substeps] Your back should be a straight line from the tip of your tailbone down to the part of your neck where your shoulders meet the sides of your head. Your legs should be pulled against you, and your feet should be dangling off the ground.

Answer format: ending1/ending2/ending3/ending4