Sit on your heels with your toes curled under. If it’s too much you can stand on your knees or lean forward to decrease the stretch. If you want to intensify you can lean back. Stay here for about a minute. You can also stretch your shoulders and triceps by raising your right arm up with your elbow bent it down with your left hand. After a 10 deep breaths switch the arms.
Modification: if there is discomfort in the knees you can place a rolled towel behind your knees.