Yoga can be an effective remedy for relieving neck and shoulder tension by stretching and strengthening the muscles in that area, promoting relaxation, and improving posture. Here are some yoga practices that can help alleviate neck and shoulder tension:

1. Neck Rolls: Sit or stand comfortably with a tall spine. Gently drop your chin towards your chest and roll your head to one side, bringing your right ear towards your right shoulder. Continue the circular motion, bringing your head back to the center and then rolling it to the other side. Repeat this movement for several rounds, allowing your neck muscles to relax and release tension.
2. Shoulder Rolls: Stand with your feet hip-width apart and your arms relaxed by your sides. Inhale as you lift your shoulders towards your ears, exhale as you roll them back and down. Repeat this movement for several rounds, focusing on creating space and relaxation in the shoulder area.
3. Cow Face Arms (Gomukhasana Arms): Sit or stand with a tall spine. Extend your right arm straight up and bend it, reaching your right hand towards the back of your neck. Extend your left arm out to the side and bend it, reaching your left hand towards your lower back. If possible, clasp your hands behind your back. If clasping your hands is challenging, use a strap or hold onto a towel. This pose helps open the shoulders and release tension in the upper back and neck.
4. Thread the Needle Pose: Begin on your hands and knees, with your hands under your shoulders and knees under your hips. Inhale as you reach your right arm up towards the ceiling, and exhale as you thread it underneath your left arm, bringing your right shoulder and temple to the ground. Rest your right cheek on the mat and extend your left arm forward. Breathe deeply and hold the pose for a few breaths, feeling the stretch in your right shoulder and upper back. Repeat on the other side.
5. Eagle Arms (Garudasana Arms): Sit or stand with a tall spine. Extend your arms forward at shoulder height. Cross your right arm over your left arm, bringing the elbows to stack one on top of the other. If possible, bring the palms of your hands together. If that is challenging, you can rest the back of your right hand on the back of your left hand. Lift your elbows slightly and hold the pose for several breaths. Eagle Arms helps release tension in the shoulders and upper back.
6. Supported Fish Pose: Place a yoga block or a rolled-up blanket horizontally on your mat. Sit on the edge of the prop and lie back, allowing your spine to gently arch over the prop. Rest your head on the mat and extend your arms by your sides. This pose helps open the chest, stretch the shoulders, and release tension in the neck and upper back. Stay in the pose for a few minutes, focusing on deep breaths and relaxation.

Remember to listen to your body and respect your limits. If you experience any pain or discomfort, modify the poses or skip them altogether. Regular practice, along with maintaining good posture throughout the day and incorporating other relaxation techniques such as deep breathing and meditation, can help alleviate and prevent neck and shoulder tension. If the tension persists or worsens, it’s advisable to consult with a healthcare professional.