Please choose the correct ending to complete the given sentence: Health: [header] How to do yoga with a partner [title] Start with a wide-angle seated forward bend. [step] A wide-angle seated forward bend is an easy pose to start off with that will give both you and your partner a good full body stretch. Allow the least flexible partner to come into position first.

Ending1: [title] Start in a straddle pose, with your hands on the thighs just below your knees. [step] Your torso will now be bent forward, and your lower abdominal muscles will be bent at a 90-degree angle with your buttocks on the mat. Ending2: [substeps] To begin with, sit on the floor on all fours with your knees comfortably bent. Your hands should now be holding your knees at a 45 degree angle with the outside of your foot resting on the floor. Ending3: [substeps] Close your eyes and hinge forward at a 90-degree angle to your partner. Remain in the flexible position for at least 30 seconds. Ending4: [substeps] From a sitting position facing your partner, spread your legs out as far as you comfortably can. Scoot forward if necessary so that you and your partner's feet are touching.

Answer format: ending1/ending2/ending3/ending4