Your head should be in line with your spine. When you tilt your head down, you put unnecessary stress on your neck muscles. This can cause stiffness, pain, and even headaches.
To find the correct position for your head, stand with your back against a wall. Make sure your heels are touching the wall and your head, neck, and spine are in line. Then, slowly lower your head down until your neck is in line with your spine. Hold for …