Summarize this article in one sentence.
Acupressure is an ancient Chinese method that involves placing pressure on an area of your body, using your fingers. Acupressure, like acupuncture, works by changing the pain messages that nerves send to your brain.  Take your middle and index fingers and form a “C” shape. Use this shape to press firmly down on the groove between the two large tendons on the inside of your wrist that start at the base of your palm. Hold them there for 30 seconds to a minute. Then, release your fingers from your wrist. You should feel your nausea lift or subside. If you need to have your hands free, you can still try acupressure by purchasing an acupressure or motion sickness bracelet. These bands have a button that applies pressure to points on your wrist continually, providing you with relief throughout the day. Sometimes, nausea is caused by discomfort in your back and neck. Gentle stretches can relieve your back and neck pain and help to relieve your nausea.  To stretch your upper back, do a downward facing cross legged pose. Sit cross-legged on the floor and bend your body forward. Stop bending forward when your body is at a 45 degree angle with your legs. Rest your arms on a chair in front of you. If you are more flexible, you can also bend your body until your forehead touches the ground in front of you and your hands are stretched outward. To stretch your neck, sit down in a chair. Relax your shoulders and place your hands on your thighs. Tilt your head toward your shoulder and hold for 15 to 30 seconds. Keep your opposite shoulder down. Take a deep breath and bring your head back to the center. Repeat this 2 to 4 times for each side.  Another great anti-nausea yoga pose is putting your legs up against a wall. Lie on a yoga mat or carpet against a wall. Place your tailbone and buttocks against the wall and swing your legs up the wall. Remain in this position for at least 5 minutes, or 40-50 breaths. This pose should help to calm your nausea and reduce any stress or tension in your body.

Summary:
Apply acupressure with your fingers. Use an acupressure band. Do yoga to stretch your back and neck.