Stretching the neck from side to side like this can help ease neck aches, especially if you apply gentle overpressure with your hand.
Performing a stretch such as this on a regular basis can help to ease muscular aches and pains in the neck and upper back.
Lateral neck flexion stretch targets the upper trapezius muscle. This stretch can be very useful for people who suffer from tight, aching muscles in the upper back and neck, such as those who work at a computer.
The sternocleidomastoid stretch stretches the two long strap-like muscles on either side of the front of the neck.