Please choose the correct ending to complete the given sentence: Health: [header] How to treat headaches at the base of the skull (cervicogenic headaches ) [title] Maintain good posture. [step] While sitting and standing, it's incredibly important to maintain proper posture to avoid pressure on the spine. Less pressure on your spine will help your cervicogenic headaches improve, as this is where the stress originates.

Ending1: Try to focus your attention on the part of your body that is most vulnerable to pain. Sitting or standing incorrectly will only cause damage to you, especially your neck if you try it. Ending2: [substeps] Try to keep your weight just beneath your head as you sit. For this, you should get an extra shoulder length agreement with your doctor. Ending3: Though it will take conscious effort initially, over time, good posture will just become habit. [substeps] While sitting, consider supporting your back with a pillow or a rolled towel. Ending4: [substeps] Try to keep your spine straight, and align your shoulders and hairline with your spine. As you do this, squeeze your neck with each deep inhale and exhale to keep yourself straight and in alignment.

Answer format: ending1/ending2/ending3/ending4